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Answer: m∠XWZ = 40
Step-by-step explanation:
because ΔXYW and ΔZYW are the right triangles at X and Z, they have:
XY = YZ = 16
WY ≅ WY
∠X = ∠Z = 90°
=> ΔXYW = ΔZYW
=> m∠XWY = m∠ZWY = 1/2.m∠XWZ
=> m∠XWZ = 2.m∠XWY = 2.20 = 40°