The figure shows a parallelogram. Find
- ∠t
- ∠s
- ∠r
(a)
∠WZX
= 180° - 37° - 66°
= 77° (Angles sum of triangle)
∠t = ∠WZX = 77° (Vertically opposite angles)
(b)
∠s = ∠WVX = 63° (Alternate angles)
(c)
∠XZW = ∠t = 77° (Vertically opposite angles)
∠r
= 77° - 63°
= 14° (Exterior angle of a triangle)
Answer(s): (a) 77°; (b) 63°; (c) 14°