Question

A side of the triangle below has been extended to form an exterior angle of 129°. Find the value of x.

Answer 1

Answer:

51

Step-by-step explanation:

Since the angle of a line is 180 degrees all we need to do is substract 129 from 180 and we have the answer for x

180-129=51

Answer 2

129° + x = 180°. [Linear pair]

=> x = 180° - 129°

=> x = 51°