Answer:
angle g and h are complementary angles.
Explanation:
Given the angles
g = (2x-90
h = 180 - 2x
Taking the sum of the angles
g + h = 2x- 90 + 180 - 2x
g + h = 2x - 2x - 90 + 180
g = h = -90+ 180
g + h = 90degrees
Since complementary angles are angles that their sum id 90degrees, hence angle g and h are complementary angles.