Read and download NCERT Class 7 Maths Lines and Angles in NCERT book for Class 7 Mathematics. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Mathematics textbook for Class 7 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 7 Mathematics to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 7 Mathematics Chapter 5 Lines and Angles
Class 7 Mathematics students should refer to the following NCERT Book Chapter 5 Lines and Angles in Class 7. This NCERT Book for Class 7 Mathematics will be very useful for exams and help you to score good marks
Chapter 5 Lines and Angles NCERT Book Class 7
Lines and Angles
5.1 INTRODUCTION
You already know how to identify different lines, line segments and angles in a given shape. Can you identify the different line segments and angles formed in the following figures? (Fig 5.1)
Can you also identify whether the angles made are acute or obtuse or right? Recall that a line segment has two end points. If we extend the two end points in either direction endlessly, we get a line. Thus, we can say that a line has no end points. On the other hand, recall that a ray has one end point (namely its starting point). For example, look at the figures given below: Fig 5.2
Here, Fig 5.2 (i) shows a line segment, Fig 5.2 (ii) shows a line and Fig 5.2 (iii) is that of a ray. A line segment PQ is generally denoted by the symbol PQ, a line AB is denoted by the symbol AB and the ray OP is denoted by OP Give some examples of line segments and rays from your daily life and discuss them with your friends. Again recall that an angle is formed when lines or line segments meet. In Fig 5.1, observe the corners. These corners are formed when two lines or line segments intersect at a point. For example, look at the figures given below:
In Fig 5.3 (i) line segments AB and BC intersect at B to form angle ABC, and again line segments BC and AC intersect at C to form angle ACB and so on. Whereas, in Fig 5.3 (ii) lines PQ and RS intersect at O to form four angles POS,
SOQ, QOR and ROP. An angle ABC is represented by the symbol
∠ABC. Thus, in Fig 5.3 (i), the three angles formed are ∠ABC, ∠BCA
and ∠BAC, and in Fig 5.3 (ii), the four angles formed are ∠POS, ∠SOQ,
∠QOR and ∠POR. You have already studied how to classify the angles as acute, obtuse or right angle.
Note: While referring to the measure of an angle ABC, we shall write m∠ABC as simply
∠ABC. The context will make it clear, whether we are referring to the angle or its measure.
5.2 RELATED ANGLES
5.2.1 Complementary Angles
When the sum of the measures of two angles is 90°, the angles are called complementary angles.
Please refer to attached file for NCERT Class 7 Maths Lines and Angles
| NCERT Class 7 Maths Integers |
| NCERT Class 7 Maths Fractions and Decimals |
| NCERT Class 7 Maths Data Handling |
| NCERT Class 7 Maths Simple Equations |
| NCERT Class 7 Maths Lines and Angles |
| NCERT Class 7 Maths The Triangle and Its Properties |
| NCERT Class 7 Maths Congruence of Triangles |
| NCERT Class 7 Maths Comparing Quantities |
| NCERT Class 7 Maths Rational Numbers |
| NCERT Class 7 Maths Practical Geometry |
| NCERT Class 7 Maths Perimeter and Area |
| NCERT Class 7 Maths Algebraic Expressions |
| NCERT Class 7 Maths Exponents and Powers |
| NCERT Class 7 Maths Symmetry |
| NCERT Class 7 Maths Visualising Solid Shapes |
| NCERT Class 7 Maths Solutions Answers |
Mathematics NCERT Book Class 7 Chapter 5 Lines and Angles
The above NCERT Books for Class 7 Mathematics Chapter 5 Lines and Angles have been published by NCERT for latest academic session. The textbook by NCERT for Chapter 5 Lines and Angles Mathematics Class 7 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Chapter 5 Lines and Angles NCERT etextbooks as the exams for Class 7 Mathematics are always asked as per the syllabus defined in these ebooks. These Class 7 Chapter 5 Lines and Angles book for Mathematics also includes collection of question. We have also provided NCERT solutions for Class 7 Mathematics which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 7 students.
NCERT Book Class 7 Mathematics Chapter 5 Lines and Angles
The latest NCERT book for Chapter 5 Lines and Angles pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 7 Mathematics Chapter 5 Lines and Angles are designed to enhance the overall understanding of students. All Class 7 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 7 students.
Chapter 5 Lines and Angles NCERT Book Class 7 Mathematics
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Class 7 Mathematics Chapter 5 Lines and Angles NCERT Book
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Class 7 Chapter 5 Lines and Angles NCERT Book Mathematics
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