Last updated at May 29, 2018 by Teachoo

Transcript

Example 6 In an isosceles triangle ABC with AB = AC, D and E are points on BC such that BE = CD (see figure). Show that AD = AE. Given: ∆ ABC is isosceles, So, AB = AC Also, BE = CD To prove: AD = AE Proof: Since AB = AC Therefore, ∠ C = ∠ B In ∆ ACD and ∆ ABE, AC = AB ∠ C = ∠ B CD = BE So, ∆ ACD ≅ ∆ ABE ∴ AD = AE Hence proved

Chapter 7 Class 9 Triangles (Term 1)

Serial order wise

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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.