Question

in given figure ad is the bisector of angle A if angle abc = 90 degree prove that ABC is isosceles

Answer 1

Answer:

Step-by-step explanation:

In triangles ABD and ADC:

angle ADB= angle ADC. (given)

AD=AD. (common)

angle DAB = angle DAC. (given)

Therefore, ABD congruent ADC

Therefore Angle B = angle C. (cpct)

Hence proved