Answer:
x = 36
Explanation:
The angles 4x and x are supplementary, meaning they add up to 180; therefore, we have
[tex]4x+x=180[/tex][tex]5x=180[/tex]dividing both sides by 5 gives
[tex]x=36[/tex]Hence, the measure of angle x is 36 and that of 4x is 4 * 36 = 144.
The angle opposite to 4x also measures 144 and the one opposite to x is 36. and so on.