Question

triangle abc, ad is perpendicular to bc and ad bisect angle a prove that triangle abd is congruent to triangle acd .also prove that triangle abc is isosceles​

Answer 1

AD bisects angle A
so angle BAD is equal to angle DAC
AD is a common line
AD is perpendicular to triangle ABC
so angle B is equal to angle c
so AAS rule ABD is congurent to ADC