follow the steps to find the area of the shaded region. the height (h) is needed to find the area of the…

follow the steps to find the area of the shaded region. the height (h) is needed to find the area of the triangle. some imaginary lines have been drawn to help find it. start by find the measure of angle x. angle x = ?°
Answer
Explanation:
Step1: Recall angle - supplementary rule
The sum of supplementary angles is 180°.
Step2: Calculate angle x
Since x and 129° are supplementary, we have $x = 180 - 129$. $x=51^{\circ}$
Answer:
$51$