The figure is made up of straight lines. Given that ∠c is four times that of ∠e, find
- ∠c
- ∠d
- ∠e
(a)
∠c = 80° (Vertically opposite angles)
(b)
∠d
= 180° - 80° - 20°
= 80° (Angles on a straight line)
(c)
∠e
= 80° ÷ 4
= 20°
Answer(s):(a) 80°; (b) 80°; (c) 20°