The figure shows a parallelogram. Find
- ∠t
- ∠s
- ∠r
(a)
∠WZX
= 180° - 35° - 78°
= 67° (Angles sum of triangle)
∠t = ∠WZX = 67° (Vertically opposite angles)
(b)
∠s = ∠WVX = 50° (Alternate angles)
(c)
∠XZW = ∠t = 67° (Vertically opposite angles)
∠r
= 67° - 50°
= 17° (Exterior angle of a triangle)
Answer(s): (a) 67°; (b) 50°; (c) 17°