Question

If lines m and n are parallel, and ∠ 8 measures 110°, which is the measure of ∠7

Answer 1

∡7 = 70°

Explanation:

∡7 and ∡8 are supplementary angles

∡7 + ∡8 = 180°

If:

∡8 = 110°

Then:

∡7 = 180 - 110

∡7 = 70°