Geometry
# Angles and Lines

$\color{#20A900}{\text{(green angle)} = 31^\circ},$ which of the following is **complementary** to that $\color{#20A900}{\text{green angle}}$?

Which pair of angles are **supplementary**?

If $\angle A=5 ^\circ$ and $\angle B$ is the supplement of $\angle A,$ then $\angle A + \angle B$ forms a(n) $\text{\_\_\_\_\_\_\_\_\_\_}.$

$\quad \text{A)}$ acute angle

$\quad \text{B)}$ right angle

$\quad \text{C)}$ obtuse angle

$\quad \text{D)}$ straight line

$\quad \text{E)}$ none of the above

Find the measure of $\angle Z.$