The figure is not drawn to scale. Find
- ∠v
- ∠w
(a)
∠z
= 180° - 100°
= 80° (Angles on a straight line)
∠y
= 180° - 81° - 80°
= 19° (Angles sum of triangle)
∠y = ∠v (Alternate angles)
(b)
∠x
= 180° - 100°
= 80° (Interior angles)
∠x = ∠w = 80° (Corresponding angles)
Answer(s): (a) 19°; (b) 80°