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