Question

abc is an quadrilateral triangle .ad is the bisector of angle A.find the measure of angle ADC

Answer 1

Hii. ....friend

The answer is here,

Given that,

ABC is the equilateral triangle. so, Each angle of the triangle is equal to 60.

And AD is the angular bisector of A .so, AngleDAC is equal to 30.

From angle sum property,

Angle ADC + Angle DAC +Angle ACD=180

=> AngleADC = 180 - (60+30)

=> Angle ADC = 90.


:-)Hope it helps u.