Fact 1: Angle x and angle 90 + x are supplementary angles.
This means that they add up to 180 degrees.
Therefore, we can solve for x, as follows:
x + 90 + x = 180
2x + 90 = 180
Subtracting 90 at both sides:
2x + 90 - 90 = 180 - 90
2x = 90
Dividing by 2 at both sides:
2x/2 = 90/2
x = 45
Fact 2: Angle x and angle 90 - x are corresponding angles, and they are equal.
Therefore, x = 90 - x
45 = 45
