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