Two congruent triangles, ΔQRS and ΔWXY, with given angles and side lengths. Find the measure of angle W.
Two triangles, ΔQRS and ΔWXY, with given side lengths and angles. ΔQRS has angles 63° and 37°, and side QR = 50 mm. ΔWXY has angle 80° at X, side XY = 75 mm, and side YW = 83 mm. ΔQRS ≅ ΔWXY. Find m∠W.