1. Chapter 7 Class 9 Triangles
  2. Serial order wise
  3. Theorems

Theorem 7.3

Last updated at May 29, 2018 by

Theorem 7.3 - Sides opposite to equal angles of triangle are equal.jpg

2 Theorem 7.3 - Hence, Sides opposite to equal angles are equal .jpg

  1. Chapter 7 Class 9 Triangles
  2. Serial order wise
    3. Theorems
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Transcript

Theorem 7.3 :- The sides opposite to equal angles of a triangle are equal. Given :- A triangle ABC where ∠B = ∠C To Prove :- AB = AC Construction:- Draw a bisector of ∠A intersecting BC at D. Proof:- In △BAD and △CAD ∠ B = ∠ C ∠BAD = ∠CAD AD = AD △BAD ≅ △CAD Thus, AB = AC Hence, sides opposite to equal angles are equal. Hence proved

Chapter 7 Class 9 Triangles
Serial order wise

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.