Question

In triangle ABC , if angle A equal to 100°,AD bisects angle A and ADlBC then angle B equal to

Answer 1

Answer:

if the AD bisects BC then angle B=40°

Step-by-step explanation:

if AD bisects BC measure angle D=90° and A=50° (100÷2)

in triangle ABD

angle A+ angle B + angle B=180°

angle B=180-( 50+90)

angle B = 180-140

=40°