Question

Isosceles triangle ABC is shown below.

Triangle A B C. Angles B and C are x. Sides C A and B A extend to form an exterior angle at point A with a measure of 22 degrees.

What is the value of x?

Answer 1

the sum of the angles of a triangle = 180°.

ABC is identical at A, angles B and C are equal

x= the measure of angles B and C

180° = 22+2x

180-22=2x

158=2x

x=158/2=79°

Explanation: