1. Chapter 7 Class 9 Triangles
  2. Serial order wise
  3. Ex 7.2
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Ex 7.2, 5 - Chapter 7 Class 9 Triangles

Last updated at Dec. 13, 2024 by Teachoo

Transcript

Ex7.2, 5 ABC and DBC are two isosceles triangles on the same base BC (see the given figure). Show that ∠ABD = ∠ACD. Given: ΔABC is isosceles So, AB = AC ΔDBC is isosceles So, DB = DC To prove: ∠ ABD = ∠ ACD Proof Let us join AD. We take ΔABD and ΔACD, In ΔABD and ΔACD, AB = AC BD = CD AD = AD ∴ ΔABD ≅ ΔACD ⇒∠ABD = ∠ACD Hence proved
  1. Chapter 7 Class 9 Triangles
  2. Serial order wise

    3. Ex 7.2

    Ex 7.3 →
Ex 7.3 →
Chapter 7 Class 9 Triangles
Serial order wise

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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