The figure is not drawn to scale. Find
- ∠j
- ∠k
(a)
∠p
= 180° - 100°
= 80° (Angles on a straight line)
∠n
= 180° - 79° - 80°
= 21° (Angles sum of triangle)
∠n = ∠j (Alternate angles)
(b)
∠m
= 180° - 100°
= 80° (Interior angles)
∠m = ∠k = 80° (Corresponding angles)
Answer(s): (a) 21°; (b) 80°