Question

1.1r pairs of angles, part 1
$m\angle t=(3y - 36)^{circ}$, find the measure of the supplement of $\angle t$.
(216 - 3y)°
(144 + 3y)°
(134 + 3y)°
(116 - 3y)°

Explanation:

Step1: Define supplement

Supplementary angles sum to 180°.

Step2: Calculate supplement of ∠T

Supplement = 180° - m∠T = 180 - (3y - 36)

Step3: Simplify expression

180 - 3y + 36 = 216 - 3y

Answer:

A. (216 - 3y)°