Answer: 33 degrees
Step-by-step explanation:
Since J and K are midpoints, JK must be parallel to GH.
If the linese are parallel, then angle IHG would equal angle IKJ because they would be corresponding angles. We can now set up an equation.
-7x + 75 = -4x + 57
Combine like terms:
3x = 18
Divide both sides by 3:
x = 6
Therefore, -7x + 75 = -7*6 + 75 = -42 + 75 = 33
