Question

(b) problem 16: find x in this figure. (first taught in lesson 31) after you enter your answer press go. x =

Explanation:

Step1: Find the interior - angle adjacent to 140°

$180 - 140=40$

Step2: Use the exterior - angle property of a triangle

The exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles. So $x=40 + 25+50 = 115$

Answer:

$x = 115$