Answer:
20
4x will be 80
5x will be 100
Step-by-step explanation:
So those two how pink arrows means those opposite sides are parallel.
The side at the bottom is acting as a transversal through the parallel lines.
The angle that has measurement 5x and the one that has 4x are actually same-side interior angles; some people like to call it consecutive angles.
These angles add up to be 180 degrees when dealing with parallel lines.
So we have 5x+4x=180
which means 9x=180
Divide both sides by 9 giving us x=180/9
x=180/9=20.
The angle labeled 4x will then be 4(20) which is 80.
The angle labeled 5x will then by 5(20) which is 100.
