1. Chapter 5 Class 7 Lines and Angles
  2. Concept wise
  3. Angles made by the transversal - Theory
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Proof of Alternate Exterior Angle Equal

Last updated at Dec. 16, 2024 by Teachoo

Let’s prove alternate exterior angles ∠1 & ∠8 equal

For parallel lines l and m,

with transversal p,

  ∠1 = ∠5       (Corresponding angles)  …(1)

 

Also,

  ∠5 = ∠8               (Vertically opposite angles)  …(2)

 

From (1) & (2)

  ∠1 = ∠5

 

Hence,

Alternate Exterior Angles are equal. 

 

 

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

    3. Angles made by the transversal - Theory

    Angles made by the transversal - Questions →
Angles made by the transversal - Questions →
Chapter 5 Class 7 Lines and Angles
Concept wise

About the Author

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo