Answer:
D) the value of x is 135, because the angles shown in each diagram are complementary
Step-by-step explanation:
Each diagram has 2 angles labeled, and those two angles are always supplementary. The sum of the measures of two supplementary angles is 180°.
x + 45 = 180
x = 180 - 45
x = 135
Answer: D) the value of x is 135, because the angles shown in each diagram are complementary