Question

Abc is a triangle in which ad is the bisector of angle a if ad is perpendicular to bc show that abc is isosceles

Answer 1

ATTACHMENT___☺️

Mark BRAINLIEST✓✓

Answer 2

$in \: ∆abd \: and \: ∆acd.. \\ < bad \: = \: < cad \: \: \: \: \: \: \: (given)$

$ad \: = ad \: \: \: \: \: (common)$

$< adb = \: < adc \: = {90}^{o} \: \: (given)$

So , ∆ABD ≈ ∆ACD. (ASA rule)

So,. AB = AC. (CPCT)

or, ∆ABC is an Isoceles Triangle

Hence Proved