Question

if angle ABC; an angle (ACD = 108 them find angle (ACB) =?​

Answer 1

Answer:

Given = angle ACD =108

To find =angle (ACB) =?

Here, from given condition,

Angle ACD is the exterior angle of Triangle ACB.

therefore, angle A +angle B+angle C=180......(1)

hence, 108 + angle ACD =180.........( by remote interior angles theorem.)

therefore,

angle ACD=72 degree.