The figure is not drawn to scale. Find
- ∠e
- ∠f
(a)
∠i
= 180° - 102°
= 78° (Angles on a straight line)
∠h
= 180° - 77° - 78°
= 25° (Angles sum of triangle)
∠h = ∠e (Alternate angles)
(b)
∠g
= 180° - 102°
= 78° (Interior angles)
∠g = ∠f = 78° (Corresponding angles)
Answer(s): (a) 25°; (b) 78°