Question

angle A and B are supplementary.Angle A has a measure 80 what measure of angle B the measure of angle B is​

Answer 1

∠B = 100°

Explanation:

Supplementary angles have a sum of 180°, thus

A + B = 180, that is

80 + B = 180 ( subtract 80 from both sides )

B = 100°

Answer 2

Answer: 100

Explanation:

Supplementary means they add up to 180. 180-80=100