In the figure, not drawn to scale, O is the centre of the semi circle and OFGH is a rhombus. ∠OHJ = 35°. Find
- ∠y
- ∠z.
(a)
OH = OJ = Radius
∠HOJ
= 180° - 35° - 35°
= 110° (Isosceles triangle)
∠y = ∠HOJ = 110° (Corresponding angles, FG//OH)
(b)
∠z
= 180° - 110°
= 70° (Interior angles, GH//FO)
Answer(s): (a) 110°; (b) 70°