Question

Find measure of the angles A and B​

Answer 1

Answer:

70°

Step-by-step explanation:

Let angle A be x.

then angle B = x (as angle A = angle B)

We know that the exterior angle of a triangle is equal to the sum of the two opposite interior angles.

A/Q A+B = ACD

=> x+x = 140°

=> 2x = 140°

=> x = 140/2

=> x = 70° Ans

Answer 2

Answer:

angle (A)=angle (B)=70°

Step-by-step explanation:

since, angle (ACD)=140° and it is the exterior angle of angle (A) and angle (B) also angle (A) and angle (B) are equal so,

angle (ACD)=angle (A)+angle (B)

140°=angle (A)+angle (B)

140°=angle (A)+angle (A)

140°=2angle(A)

angle (A)=70°=angle (B)