The figure is made up of straight lines. Given that ∠r is thrice that of ∠t, find
- ∠r
- ∠s
- ∠t
(a)
∠r = 84° (Vertically opposite angles)
(b)
∠s
= 180° - 84° - 28°
= 68° (Angles on a straight line)
(c)
∠t
= 84° ÷ 3
= 28°
Answer(s):(a) 84°; (b) 68°; (c) 28°