The figure is made up of straight lines. Given that ∠q is thrice that of ∠s, find
- ∠q
- ∠r
- ∠s
(a)
∠q = 81° (Vertically opposite angles)
(b)
∠r
= 180° - 81° - 27°
= 72° (Angles on a straight line)
(c)
∠s
= 81° ÷ 3
= 27°
Answer(s):(a) 81°; (b) 72°; (c) 27°