In the figure, RSTU and SWXY are two rhombuses. If ∠WXY = 120° and ∠RUT = 91°, calculate
- ∠XWY
- ∠XTS
- ∠YZT
(a)
∠XWY
= (180° - 120°) ÷ 2
= 30° (Isosceles triangle)
(b)
∠XTS = ∠RUT = 91° (Corresponding angles)
(c)
∠YZT
= 91° - 30°
= 61° (Exterior angle of a triangle)
Answer(s): (a) 30°; (b) 91°; (c) 61°