angles a and b are supplementary. angle a has a measure of 80°. what is the measure of angle b? the measure…
angles a and b are supplementary. angle a has a measure of 80°. what is the measure of angle b? the measure of angle b is °.
Answer
Answer:
100
Explanation:
Step1: Recall supplementary - angle definition
Supplementary angles sum to 180°. So (A + B=180^{\circ}).
Step2: Substitute the value of angle A
Given (A = 80^{\circ}), then (80^{\circ}+B = 180^{\circ}).
Step3: Solve for angle B
(B=180^{\circ}-80^{\circ}=100^{\circ}).