In the figure, not drawn to scale, O is the centre of the semi circle and OABC is a rhombus. ∠OCD = 35°. Find
- ∠t
- ∠v.
(a)
OC = OD = Radius
∠COD
= 180° - 35° - 35°
= 110° (Isosceles triangle)
∠t = ∠COD = 110° (Corresponding angles, AB//OC)
(b)
∠v
= 180° - 110°
= 70° (Interior angles, BC//AO)
Answer(s): (a) 110°; (b) 70°