Given the m∠5 = 45°, find the measure of ∠8.
Question 1 options:
35°
45°
135°
145°

Answer:
(c) 135°
Step-by-step explanation:
Angles 5 and 8 form a linear pair, which means they are supplementary: their measures total 180°.
∠8 = 180° -∠5 = 180° -45°
∠8 = 135°