Answer:
10°
Step-by-step explanation:
Step 1:
∠EFG = 90° Def. of Right Angle
Step 2:
∠EFH + ∠HFG = ∠EFG Sum of an angle
Step 3:
7x + 2x = 90 Input Values
Step 4:
9x = 90 Combine Like Terms
Step 5:
x = 90 ÷ 9 Divide
x = 10°
Hope This Helps :)
