Answer:
Vertical angles
x=25
Step-by-step explanation:
Adjacent angles are angles that are next to each other. Vertical angles are angles that are opposite each other.
In this problem, the angles are opposite each other. Therefore, they are vertical angles.
Since they are vertical angles, they are congruent, or equal. So, we can set them equal to each other and solve for x.
75=4x-25
To solve for x, we have to isolate x. First, move all the constants to the same side, by adding 25 to both sides.
75+25=4x-25+25
75+25=4x
100=4x
Now, 4 and x are being multiplied. To undo this, divide both sides by 4.
100/4=4x/4
100/4=x
25=x
The angles are vertical and x=25
