An angle measures 80° less than the measure of its supplementary angle. What is the measure of each angle?

50° and 130°

Step-by-step explanation:

let one angle be x then the other angle is x - 80

Supplementary angles sum to 180°, thus

x + x - 80 = 180, that is

2x - 80 = 180 (add 80 to both sides)

2x = 260 (divide both sides by 2)

x = 130

The angles are 130° and 130 - 80 = 50°