Question

The measure of an angle is 140°. What is the measure of its supplementary angle

Answer 1

Answer:

The supplementary angle would be 40°.

Step-by-step explanation:

Supplementary angles equal 180°

180 - 140

40

Answer 2

$\huge\boxed{40^{\circ}}$

$\text{A pair of supplementary angles always adds up to}\ 180^{\circ}\text{.}\\140^{\circ}+x^{\circ}=180^{\circ}\\\text{Subtract}\ 140^{\circ}\ \text{from each side.}\\x^{\circ}=\boxed{40^{\circ}}$