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