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Angle is formed between two rays with a common end point.

Angles - Part 2

The common end point is called vertex of the angle

and the rays are called arms of the angle.

 

How do we name the angle?

Suppose the angle is

Angles - Part 3

We can call it

  ∠ B

     Or

  ∠ ABC   

Symbol of angle → ∠

 

 

Interior and Exterior of an angle

Let us take the angle

Angles - Part 4

 

Example

Angles - Part 5

X, Y is in interior of ∠ABC

Z is on  ∠ABC

P, Q is in exterior of  ∠ABC

  1. Chapter 5 Class 7 Lines and Angles
  2. Concept wise

About the Author

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.