In the figure, not drawn to scale, O is the centre of the semi circle and OABC is a rhombus. ∠OCD = 34°. Find
- ∠m
- ∠n.
(a)
OC = OD = Radius
∠COD
= 180° - 34° - 34°
= 112° (Isosceles triangle)
∠m = ∠COD = 112° (Corresponding angles, AB//OC)
(b)
∠n
= 180° - 112°
= 68° (Interior angles, BC//AO)
Answer(s): (a) 112°; (b) 68°