Question

∆ is an isosceles triangle in which AB = AC , AD⏊ . Prove that ∠B = ∠C

Answer 1

Answer:

AB=AC

⇒∠B=∠C     (angles opp to equal sides are equal)

OR

in ΔABD n ΔACD

AB=AC  (GIVEN)

AD=AD (COMMON)

∠ADB=∠ACD (90°)

ΔABD≅ΔACD (SAS CRITERIA)

⇒ ∠B=∠C (CPCT)

Step-by-step explanation: