Question

Find the value of the variable that results in congruent triangles.

A. 80
B. 10
C. 50
D. 30
​

Answer 1

x = 10

Explanation:

Mathematically, the sum of the interior angles of a triangle is 180

Thus, we have it that;

55 + 45 + (5x + 30) = 180

100 + 5x + 30 = 180

5x = 180-30-100

5x = 50

x = 50/5

x = 10