The figure is not drawn to scale. Find
- ∠a
- ∠b
(a)
∠e
= 180° - 104°
= 76° (Angles on a straight line)
∠d
= 180° - 77° - 76°
= 27° (Angles sum of triangle)
∠d = ∠a (Alternate angles)
(b)
∠c
= 180° - 104°
= 76° (Interior angles)
∠c = ∠b = 76° (Corresponding angles)
Answer(s): (a) 27°; (b) 76°