Answer:
20°
Step-by-step explanation:
Exterior angle property: The exterior angle of a triangle equals the sum of opposite interior angles.
∠XYZ = ∠YWX + ∠WXY
10x - 5 = 3x + 17 + 3x + 2
10x - 5 = 3x + 3x + 17 + 2
10x - 5 = 6x + 19
10x = 6x + 19 + 5
10x = 6x + 24
10x - 6x = 24
4x = 24
x = 24÷ 4
[tex]\sf \boxed{x = 6}[/tex]
∠WXY = 3x + 2
= 3*6 + 2
= 18 + 2
= 20°