The figure is not drawn to scale. Find
- ∠i
- ∠j
(a)
∠n
= 180° - 100°
= 80° (Angles on a straight line)
∠m
= 180° - 78° - 80°
= 22° (Angles sum of triangle)
∠m = ∠i (Alternate angles)
(b)
∠k
= 180° - 100°
= 80° (Interior angles)
∠k = ∠j = 80° (Corresponding angles)
Answer(s): (a) 22°; (b) 80°