The figure is not drawn to scale. Find
- ∠q
- ∠r
(a)
∠v
= 180° - 100°
= 80° (Angles on a straight line)
∠t
= 180° - 77° - 80°
= 23° (Angles sum of triangle)
∠t = ∠q (Alternate angles)
(b)
∠s
= 180° - 100°
= 80° (Interior angles)
∠s = ∠r = 80° (Corresponding angles)
Answer(s): (a) 23°; (b) 80°