Question

The measures of the angles in triangle UVW are shown in the diagram below:

A. 21
B. 39
C. 45
D. 126

Answer 1

D. 126

Explanation:

The sum of interior angles in a triangle is equal to 180

30 + 24 + 3x - 9 = 180 add like terms

45 + 3x = 180 subtract 45 from both sides

3x = 135 divide both sides by 3

x = 45 and to find angle UVW replace x with 45

3*45 - 9 = 126