The figure is made up of straight lines. Given that ∠i is twice that of ∠k, find
- ∠i
- ∠j
- ∠k
(a)
∠i = 78° (Vertically opposite angles)
(b)
∠j
= 180° - 78° - 39°
= 63° (Angles on a straight line)
(c)
∠k
= 78° ÷ 2
= 39°
Answer(s):(a) 78°; (b) 63°; (c) 39°