Question

10) ABC is an isosceles triangle with AB = AC and AD is an altitude then__________ (a) ∠B ∠C (b) ∠B ∠C (c) ∠B = ∠C (d) None of these​

Answer 1

Step-by-step explanation:

In tringle ABD & ACD

AB=AC (Given)

Angle ADB=Angle ADC (both are right angle)

AD=AD (common)

So both the triangles are congruent

Therefore BD=CD (CPCT)

Angle BAD=Angle CAD (CPCT)

Hence, AD bisects bith BC and Angle A.