Question

△ABC is isosceles. AB=AC and AD⊥BC. Prove that ∠B=∠C.​

Answer 1

Answer:

Step-by-step explanation:

In △ABP and △ACP

AB=AC        (Given)

∠APB=∠APC          (Each equal to 90°)

AP=AP        (Common)

Therefore, by RHS congruence rule, △ABP≅△ACP

Hence, ∠B=∠C            (Corresponding parts of congruent triangles are equal)

hope, this will help you.

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Answer 2

Answer:

Here , c.p.c.t stands for corresponding part of congruent triangles.

And equation 1 states that AD is perpendicular to BD .