In the figure, not drawn to scale, O is the centre of the semi circle and OZAB is a rhombus. ∠OBC = 33°. Find
- ∠t
- ∠v.
(a)
OB = OC = Radius
∠BOC
= 180° - 33° - 33°
= 114° (Isosceles triangle)
∠t = ∠BOC = 114° (Corresponding angles, ZA//OB)
(b)
∠v
= 180° - 114°
= 66° (Interior angles, AB//ZO)
Answer(s): (a) 114°; (b) 66°