The figure is not drawn to scale. Find
- ∠q
- ∠r
(a)
∠v
= 180° - 102°
= 78° (Angles on a straight line)
∠t
= 180° - 81° - 78°
= 21° (Angles sum of triangle)
∠t = ∠q (Alternate angles)
(b)
∠s
= 180° - 102°
= 78° (Interior angles)
∠s = ∠r = 78° (Corresponding angles)
Answer(s): (a) 21°; (b) 78°