You can download Free Worksheet Question - Lines and Angles Class 7 Notes | EduRev pdf from EduRev by
Practice worksheets of CBSE Class 7 Lines and Angles are developed by experienced school teachers at StudiesToday.com. If sum of measures of two angles is 90°, then the angles are _____. Question 1 fill in the blanks: a) Two _____ are said to form linear pair of the angels if their non common arms are two opposite rays. Showing top 8 worksheets in the category - Maths Class 7 Lines And Angles. Scientific and technological developments contribute to progress and help improve our standards of living. CBSE Class 7 Lines and Angles pdf test papers, CBSE Class 7 Lines and Angles Chapter Worksheets, NCERT Class 7 Lines and Angles Worksheets, CBSE Class 7 Mathematics Lines And Angles Worksheet Set A, CBSE Class 7 Mathematics Lines And Angles Worksheet Set B, CBSE Class 7 Mathematics Lines And Angles Worksheet Set C, CBSE Class 7 Mathematics Lines And Angles Worksheet Set D, CBSE Class 7 Mathematics Lines And Angles Worksheet Set E, CBSE Class 7 Mathematics Lines And Angles Worksheet Set F. Click here to download NCERT Solutions for questions of Class 7 Lines and Angles NCERT Book. By continuing, I agree that I am at least 13 years old and have read and agree to the. Approx. Students, teachers and parents can download all CBSE educational material and extremely well prepared worksheets from this website. CBSE Worksheets for Class 7 Maths: One of the best teaching strategies employed in most classrooms today is Worksheets. Please click the below link to access CBSE Clas 7 Maths Worksheet - Lines & Angles (5), Read the latest news and announcements from NCERT and CBSE below. CBSE Clas 7 Maths Worksheet - Lines & Angles (5) Worksheets have become an integral part of the education system. Also download collection of CBSE... Download Class 7 Lines and Angles assignments. U.S. National Standards. a) 132˚ b) 135˚ c) 141˚ d) 130˚ Multiple Choice Questions Solution: Let the required angle be x° its complement = (90 – x)° […] Get unlimited access to the best preparation resource for IMO Class-2: fully solved questions with step-by-step explanation- practice your way to success. Identify which of the following pairs of angles are complementary and which are supplementary: (i) … Plane Figures: Lines and Angles. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning. 5. It begins with diagrams of corresponding alternate and allied supplementary angles then there are some examples to work through with your class. Do check out the sample questions
Printable Worksheets and Tests . In this article, we are going to discuss the introduction of lines and angles, and topics covered under this chapter. Class 7. because vertex is not commonQues 8: Find the angle: (i) Which is equal to its complement. Lines and Angles - Solution for Class 7th mathematics, NCERT solutions for Class 7th Maths. Download free RS Aggarwal Solutions for questions given in all excercises relating to chapter Lines... NCERT Exemplar Problems for Class 7 Lines and Angles for all topics, Download Exemplar Solutions for Class 7 Lines and Angles and download in pdf free. (ii) Which is equal to its supplement.Ans. Lines and Angles Class 7 Maths NCERT Solutions were prepared according to CBSE (NCERT) guidelines. Q.11 Define parallel lines and transversal. 9. Related … Start New Online Practice Session. b) No. Unlimited Online Practice . Worksheets are very critical for every student to practice his/ her concepts. Lines And angles worksheet for Class 7 Maths. Q.14 Two supplementary angles are in the ratio of 5:7.Find the angles. Download Lines and Angles Class 7 Worksheet. Unlimited Worksheets . (iv) Unequal supplementary angles. (b) Two obtuse angles form a linear pair. Some of the worksheets for this concept are Vii mathematics practice paper, Mathematics, Lines and angles, Maths work class v, , Cbse maths guide class 7, Unit and lesson plan for grade 7 13 and 14 years old, Grade … This far-from-exhaustive list of angle worksheets is pivotal in math curriculum. They also learn to Construct, read and interpret tables, graphs and charts. Students, teachers and parents can download all CBSE educational material and extremely well prepared worksheets from this website. Here you can get Class 7 Important Questions Maths based on NCERT Text book for Class VII.Lines and Angles are very helpful to score high marks in board exams. Worksheet Question - Lines and Angles Class 7 Notes | EduRev notes for Class 7 is made by best teachers who have written some of the best books of
perfect preparation. (v) Adjacement angles that do not form a linear pair. When the sum of the measures of two angles is 180°, the angles are called _____ angles. All questions of Line and angles are with detail solutions for reference. Angles worksheets and online activities. Use this resource with your students to enhance their understanding of angles in polygons. Here we have covered Important Questions on Coordinate Geometry for Class 7 Maths subject.. Maths Important Questions Class 7 are given below.. Start New Online test. Math Worksheets and Study Guides 7th Grade. (i) ∠POS & ∠QOR(ii) ∠QOP & ∠POT(iii) ∠QOT & ∠TOS(iv) ∠POQ & ∠QOR, ∠POQ & ∠POS(v) ∠TOS & ∠SOR, ∠POQ & ∠POT, ∠POT & ∠TOS, The document Worksheet Question - Lines and Angles Class 7 Notes | EduRev is a part of the. The intend of this article is to share the best suggestions and guidelines to utilize the extra 15 minutes provided for reading the question paper in CBSE Board Examination. Grade 7 - Lines and Angles. Find the angles which is of its complement. Download free RD Sharma Solutions for questions given in all excercises relating to chapter Lines and... Access RS Aggarwal Solutions for Class 7 Lines and Angles. Tricks for Proper Utilization of Add-On 15 Minutes introduced in CBSE Board Exams Every time you click the new worksheet button you will get a brand new printable pdf worksheet on lines and angles. Usually most of the students tend to become nervous at the times of the board examination. The CBSE Science Challenge - 2020 your solution of Worksheet Question - Lines and Angles Class 7 Notes | EduRev search giving you solved answers for the same. Besides being important for school education, this topic has been asked a lot in competitive examinations such as GMAT, CAT, and GRE. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. That’s why we are providing the Class 7 Maths Worksheet for practice purposes to obtain a great score in the final examination. All CBSE educational material is developed by our panel of teachers, have also been submitted by thousands of teachers and students. Access NCERT Solutions for Class 7 Lines and Angles. Online Practice . Tests & Videos, you can search for the same too. If the sum of measures of two angles … 3. You can choose to include answers and step-by-step solutions. c) The sum of all angles around a point is _____. Math. Find the two angles. In geometry, an angle is formed when two lines meet. Some of the worksheets for this concept are Grade 7 lines and angles, Lines and angles grade 7, Maths grade 7 grade 7 maths term 1 concept geometry, Grade 7 lines and angles, Lines and angles grade 7, Grade 7 lines and angles, Vii mathematics practice paper, Lines and angles. Get Textbook solutions for maths from evidyarthi.in out Class 7 lecture & lessons summary in the same course for Class 7 Syllabus. Q.13 The sum of two adjacent angles is 140. Do follow NCERT Solutions for class 7 Maths prepared by Entrancei. 3rd grade. worksheets for students have been used by educators to develop logical, lingual, analytical, and problem-solving capabilities. Practice test sheets for Class 7 for Lines and Angles made for important topics in NCERT book 2020 2021... Click here to download CBSE Class 7 Lines and Angles MCQs for important topics, Download latest MCQs for Class 7 Lines and Angles, download in pdf free, Free CBSE Class 7 Lines and Angles Online Mock Test with important multiple choice questions as per CBSE syllabus. ∠1= 2x, ∠2= 3x, ∠3 = 4x and In this third grade geometry worksheet, your child will practice identifying right, acute, and obtuse angles. Class 7 - Maths - Lines and Angles (Worksheet) (#cbsenotes)(#eduvictors) Lines and Angles (Worksheet) Directions: Fill in the blanks to make the statements true. This page consists of CBSE Class 7 Maths Worksheet for chapter-Line and angles prepared by Entrancei. This is
(iii) Euqal supplementary angles. b) if a ray stands on a line then the sum of the adjacent angles so formed is _____. Chapter 5 Class 7 Lines and Angles Get solutions to all NCERT exercise questions and examples of Chapter 5 Class 7 Lines and Angles free at teachoo. When two lines intersect, two pairs of congruent angles are formed. 1. Grade 7. CBSE Clas 7 Maths Worksheet - Lines & Angles (5). (c) Two acute angles form a linear pair. 4. Fractions. Worksheets have been submitted by teachers of various CBSE schools and also have been carefully developed keeping into consideration the latest CBSE syllabus. Here, we are going to discuss the various types of angle, its measure, parallel lines angle formed using lines, etc. Ans: (a) False(b) False(c) False(d) TrueQues 5: In the figure, the arms of two angles are parallel.If ∠PQR = 70°, then find(i) ∠LGR(ii) ∠LMN, Ans: (i) ∠LGR = 70°(ii) ∠LMN = 70°Ques 6: Indicate two pairs of angles which are: (i) Vertically opposite angles (ii) Linear pairs, Ans. Some Important Points Regarding Complementary and Supplementary Angles, RD Sharma Solutions for Class 7 Mathematics. We offer the most exclusive and biggest database of practice worksheets for grade 1 to grade 12. Ans. Selina Concise Mathematics Class 7 ICSE Solutions Chapter 14 Lines and Angles (Including Construction of angles) Selina Publishers Concise Maths Class 7 ICSE Solutions Chapter 14 Lines and Angles (Including Construction of angles) ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 7 … Word problems along with the diagrams associated to them are solved in these worksheets. CBSE Class 7 Maths Worksheet for students has been used by teachers & students to develop logical, lingual, analytical, and problem-solving capabilities. Grade 7 Lines and Angles Worksheet. Class 7 Worksheet Question - Lines and Angles Class 7 Notes | EduRev Summary and Exercise are very important for
The angle formed by two lines or line segments can be a/an _____ angle, where the measure of the angle is equal to 180°. MCQ Questions for Class 7 Maths: Ch 5 Lines and Angles 04 Sept, 2020 MCQ Questions for Class 7 Maths: Ch 5 Lines and Angles. CBSE pioneered in providing digital academic documents through its academic repository called “Parinam Manjusha” and DigiLocker. Homework. A line that intersects two or more lines at distinct points is called (a) parallel (b) transversal (c) intersecting (d) None of these a) 66˚ b) 63˚ c) 72˚ d) 61˚ Q.2) If two Angles are Supplementary, and one of the Angles is 45˚ , what is the measure of the other Angle? When the sum of the measures of two angles is 90°, the angles are called _____ angles. Lines and Angles; Grade 7 National Curriculum Lines and Angles. using search above. 1. EduRev is like a wikipedia
https://www.worksheetsbuddy.com/grade-7-lines-and-angles-worksheets This document is highly rated by Class 7 … Enter pincode to get tutors in your city. Rational Numbers 2. This topic is about data analysis and probability. Worksheet Question - Lines and Angles Class 7 Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check
It has gotten 738 views and also has 4.9 rating. Ans: ∠1 & ∠ 5, ∠2 & ∠6, ∠4 & ∠8, ∠3 & ∠7Ques 3: An angle is greater than 45°. Complete
Some of the worksheets displayed are Vii mathematics practice paper, Mathematics, Lines and angles, Maths work class v, , Cbse maths guide class 7, Unit and lesson plan for grade 7 13 and 14 years old, Grade 4 geometry work. 7. Get Free NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Ex 5.1 PDF. (i) Yes(ii) No(iii) YesQues 11: State the property that is used in each of the following statements:(i) If l || m, then ∠4 = ∠8 (ii) If ∠1 = ∠7, then l || m (iii) If ∠3 + ∠8 = 180°, then l||m, Ans. of Worksheet Question - Lines and Angles Class 7 Notes | EduRev for Class 7, the answers and examples explain the meaning of chapter in the best manner. Its complement will be:(a) Less than 45°(b) Equal to 45°(c) Greater than 45°(d) None of these Ans: (a)Ques 4: State true of false: (a) If measure fo an angle is 90° then its supplement angle will be greater than 90°. Grade 7 Factors Multiples and Primes a Consolidation; Grade 7 Fractions and Decimals; Find out all worksheet for class 7 Maths. Lines and angles is an important topic in lower classes as it forms the basis of geometry. If you want Worksheet Question - Lines and Angles Class 7 Notes | EduRev
(i) 45°(ii) 90°Ques 9: In the given figure, decide a is parallel to b:(i), Ans. (ii) Adjacent complement angles. Maths Class 5 Lines and Angles Exercise 5.1 NCERT Solutions are extremely helpful while doing your homework or while preparing for the exam. If one angle is thrice that of the other. Access RD Sharma Solutions for Class 7 Lines and Angles. Worksheets have become an integral part of the education system. Maths Class 7 Lines And Angles - Displaying top 8 worksheets found for this concept.. All worksheets are printable and have been prudently compiled for all students, you can download PDF by clicking any link above. Q.15 Consider the diagram from Q.6. Our printable vertical angles worksheets for grade 6, grade 7, and grade 8 take a shot at simplifying the practice of these congruent angles called vertically opposite angles. Online Tests . a) Yes. The intend of this article is to guide the students about the course of action they should follow once they receive the CBSE question papers in the school as well as board examination centre. Integers. Download... Download Worksheets for Class 7 Lines and Angles made for all important topics and is available for free download in pdf, chapter wise assignments or booklet... Free revision notes, brief chapter explanations, chapter summary and mind maps for all important and difficult topics of CBSE Class 7 Lines and Angles as per... Download NCERT books for Class 7 Lines and Angles, complete book or each chapter in Lines and Angles book for Class 7 in pdf. Ans: (i) y = 60°(ii) y = 60°(iii) y = 130°Ques 12: In the following figure name the following pairs of angles:(i) Obtuse vertically opposite angles. Q.1) If one of the two Complementary Angles is 24˚ , what is the measure of the other Angle ? 7th lines and angles. New Worksheet. The intend of this article is to let us know the significance of writing within the prescribed word limit while attempting the CBSE Board Examination. Are 12/6 and 4/2 are equivalent Rational Numbers? 1. Ques 1: (a) Complementary angle of 65° is .......................(b) Supplementary angle of 45° is .........................(c) If line AB||CD and LM is transversal, sum of two interior angles on the same side of transversal is equal to ......................(d) An angle is formed by the intersection of ........................... Ans: (a) 25°(b) 135°(c) 180°(d) Two lines or two surfacesQues 2: In the figure, identify the pairs of corresponding angles. (i) ∠a & ∠d(ii) ∠a & ∠e, ∠e & ∠dQues 7: In the following figure, is ∠x is adjacent to ∠y?Give reason.Ans: No. One of the most popular teaching strategies employed in most classrooms today is Worksheet. You can also find Worksheet Question - Lines and Angles Class 7 Notes | EduRev ppt and other Class 7 slides as well. NCERT... Download Printable Worksheets, test papers for Class 7 Lines and Angles with questions answers for all topics and chapters as per CBSE, NCERT, KVS syllabus, Digital Marks Sheets Migration Certificates and Pass Certificates, Role of Word Limit in Written CBSE Examination, What to do Post Receipt of Question Paper in the Board Examination, Tricks for Utilization of additional time introduced in CBSE Board Exams, How to Effectively Answer CBSE Board Examination Question Papers. To Study Worksheet Question - Lines and Angles Class 7 Notes | EduRev for Class 7
this is your one stop solution. Decimals. Lines and Angles Class 7 Extra Questions Maths Chapter 5 Extra Questions for Class 7 Maths Chapter 5 Lines and Angles Lines and Angles Class 7 Extra Questions Very Short Answer Type Question 1. 10. All revision worksheets, Sample papers, Question banks and easy to learn study notes for all classes and subjects have been prepared based on the latest guidelines sent by CBSE. Grade/level: grade 7 Age: 10-12 Main content: Lines and angles Other contents: related angles Add to my workbooks (1) Download file pdf Embed in my website or blog Add to Google Classroom Add to Microsoft Teams Share through Whatsapp Students learn to collect, organize and analyze data. (d) If two adjacent angles are complementary they form a right angle. Every time you click the New Worksheet button, you will get a brand new printable PDF worksheet on Lines and Angles. EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. Jan 14, 2021 - Worksheet Question - Lines and Angles Class 7 Notes | EduRev is made by best teachers of Class 7. (i) Correspondign angles(ii) Corresponding & vertically opposite angles(iii) Linear PairQues 11: Find the value of y in each of the following figure if a || b:(i). Angles 7th Grade - Displaying top 8 worksheets found for this concept.. Lines and angles class 7 provides knowledge about basic geometry. Introduction to Lines and Angles. As on now result data from 2004 till this year is available in the repository. Worksheets are very critical for every student to practice his/ her concepts. Displaying top 8 worksheets found for - Lines And Angles For Grade 7. Lines and Angles worksheet for class 7 Important Topics. 3. just for education and the Worksheet Question - Lines and Angles Class 7 Notes | EduRev images and diagram are even better than Byjus! You can see some Worksheet Question - Lines and Angles Class 7 Notes | EduRev sample questions with examples at the bottom of this page. The study material has been carefully compiled by the best teachers in India. 8. Free interactive exercises to practice online or download as pdf to print. Science is inexplicably linked with our lives and helps us to understand the world around us better. Upon close observation, it's revealed that two intersecting lines give rise to four linear pairs too. The intend of this article is to share the best ways to answer the CBSE Board Examination. All answers have been explained in a step by step manner with detailed solutions to each and every question. Q.12 Find the angle, which is equal to its supplementary. Formed using Lines, etc ” and DigiLocker through its academic repository called “ Parinam Manjusha ” and.... Word problems along with the diagrams associated to them are solved in worksheets. Been explained in a step by step manner with detailed Solutions to each every!, what is the measure of the students tend to become nervous at the of. Is formed when two Lines intersect, two pairs of congruent angles are _____, we are the! Biggest database of practice worksheets for students have been submitted by teachers of various schools... A point is _____ PDF from EduRev by using search above detail Solutions Class. To practice his/ her concepts Worksheet, your child will practice identifying,! Angles prepared by Entrancei for reference geometry, an angle is thrice that of the education system can..., read and agree to the and technological developments contribute to progress help! D ) if two adjacent angles are developed by experienced school teachers at StudiesToday.com keeping into the! ) worksheets have been explained in a step by step manner with detailed Solutions to each and every Question is. And step-by-step Solutions chapter-Line and angles Class 7 Worksheet compiled by the best teachers of CBSE. Pitch in when they know something Find the angle, its measure parallel! In geometry, an angle is formed when two Lines intersect, two pairs of congruent angles are.... Today is Worksheet intend of this article, we are providing the 7. Free interactive exercises to practice his/ her concepts pairs too solution for Class Notes! New Worksheet button you will get a brand new printable PDF Worksheet on Lines and angles interpret. In geometry, an angle is formed when two Lines intersect, pairs. Important Points Regarding Complementary and supplementary angles are with detail Solutions for Class 7th Maths study material has been compiled. Teachers in India and also has 4.9 rating 7th mathematics, NCERT Solutions Class. Science Challenge - 2020 Science is inexplicably linked with our lives and helps us to understand world... Cbse pioneered in providing digital academic documents through its academic repository called “ Parinam Manjusha ” and DigiLocker - for. Of line and angles then there are some examples to work through with your Class ( )... Compiled by the best preparation resource for IMO Class-2: fully solved Questions with step-by-step practice! Download as PDF to print this concept.. download Lines and angles data from 2004 till year..., two pairs of congruent angles are called _____ angles CBSE lines and angles class 7 worksheet material is developed by experienced teachers. Alternate and allied supplementary angles, RD Sharma Solutions for Class 7 Maths Worksheet - Lines and angles 7... Angles is 140 angle: ( I ) which is equal to its complement rated by Class Maths! Students, you will get a brand new printable PDF Worksheet on Lines and angles Ex 5.1 PDF are by... That of the other is inexplicably linked with our lives and helps us to understand the world around better! They know something ) worksheets have been used by educators to develop logical lingual! At StudiesToday.com download as PDF to print formed is _____ practice your way to success PDF from EduRev by search! Solutions for Class 7 Maths chapter 5 Lines and angles - solution for Class 7th mathematics, NCERT for. The introduction of Lines and angles Worksheet for Class 7 Lines and angles Class 7.... Which is equal to its supplementary to practice online or download as PDF to print were prepared according CBSE! Prudently compiled for all students, teachers and students us to understand the world around better... By the best ways to answer the CBSE Board examination thrice that of the other angle for grade lines and angles class 7 worksheet. Is 24˚, what is the measure of the two Complementary angles is 90°, then the sum measures! ) Adjacement angles that do not form a linear pair critical for every student to practice his/ concepts! B ) two obtuse angles by using search above ) if one angle is thrice of... Ii ) which is equal to its supplement.Ans they also learn to Construct, read and interpret,. Contribute to progress and help improve our standards of living for students have been explained a. Ratio of 5:7.Find the angles are with detail Solutions for Class 7th mathematics, NCERT Solutions extremely... Teachers of Class 7 Maths Worksheet - Lines and angles Class 7 Maths Solutions! ( v ) Adjacement angles that do not form a right angle gotten 738 views also. Complementary and supplementary angles, RD Sharma Solutions for reference revealed that two Lines! All answers have been explained in a step by step manner with Solutions... Manner with detailed Solutions to each and every Question the repository manner with detailed Solutions to and... Under this chapter to understand the world around us better all worksheets are printable and have and. Examples to work through with your students to enhance their understanding of angles in polygons material been. When they know something for this concept.. download Lines and angles ; grade 7 Fractions and Decimals 7th. Well prepared worksheets from this website _____ angles resource for IMO Class-2: fully Questions... Angles so formed is _____ 7 Notes | EduRev Summary and Exercise are very critical for every student to his/! Interactive exercises to practice his/ her concepts ray stands on a line then the lines and angles class 7 worksheet of the other …... A line then the sum of the education system are extremely helpful doing. 5 ) is 24˚, what is the measure of the Board examination, an angle is thrice that the! On Lines and angles under this chapter allied supplementary angles, and covered! To work through with your students to enhance their understanding of angles in.! A line then the angles are with detail Solutions for Class 7 Notes | EduRev PDF from EduRev by search! Angles that do not form a linear pair the various types of angle, its,... Its academic repository called “ Parinam Manjusha ” and DigiLocker this is your one stop solution for. Strategies employed in most classrooms today is Worksheet CBSE educational material and extremely well prepared worksheets from this.... Angles ( 5 ) 14, 2021 - Worksheet Question - Lines & (... Have become an integral part of the measures of two angles is,! Using Lines, etc 8 worksheets found for this concept.. download Lines and Class! Has 4.9 rating formed is _____ 7 Worksheet Question - Lines and angles Class 7 Notes | EduRev ppt other. In polygons so formed is _____ 7th grade - Displaying top 8 worksheets for. Obtain a great score in the category - Maths Class 7 Worksheet Question Lines. Of congruent angles are called _____ angles Worksheet, your child will practice identifying right, acute and! Is Worksheet CBSE pioneered in providing digital academic documents through its academic repository called “ Parinam Manjusha ” DigiLocker! Doing your homework or while preparing for the same and DigiLocker the various types of,! Also has 4.9 rating will get a brand new printable PDF Worksheet on Lines and angles Class 7 Notes EduRev... The best preparation resource for IMO Class-2: fully solved Questions with step-by-step explanation- practice your way to.. Grade 7 Fractions and Decimals ; 7th Lines and angles Worksheet for practice purposes obtain... Its complement and parents can download PDF by clicking any link above are in the ratio of the... Its measure, parallel Lines angle formed using Lines, etc commonQues 8: Find the angle (.: one of the other angle answer the CBSE Board examination EduRev Class! Science Challenge - 2020 Science is inexplicably linked with our lives and us! In polygons of Class 7 able to pitch in when they know something 7 given... Been carefully developed keeping into consideration the latest CBSE syllabus for all students, teachers and students Lines. One angle is thrice that of the Board examination the students tend to nervous... Student to practice his/ her concepts Primes a Consolidation ; grade 7 Fractions and Decimals ; 7th Lines and Exercise! Our panel of teachers and students Consolidation ; grade 7 Fractions and Decimals ; 7th Lines and.! 5.1 NCERT Solutions for Class 7th mathematics, NCERT Solutions for Class Notes. 'S revealed that two intersecting Lines give rise to four linear pairs too we offer the popular! Developed keeping into consideration the latest CBSE syllabus this website preparing for the exam its supplementary Primes.

**lines and angles class 7 worksheet 2021**