The figure shows a parallelogram. Find
- ∠g
- ∠f
- ∠e
(a)
∠IMJ
= 180° - 30° - 63°
= 87° (Angles sum of triangle)
∠g = ∠IMJ = 87° (Vertically opposite angles)
(b)
∠f = ∠IHJ = 56° (Alternate angles)
(c)
∠JMI = ∠g = 87° (Vertically opposite angles)
∠e
= 87° - 56°
= 31° (Exterior angle of a triangle)
Answer(s): (a) 87°; (b) 56°; (c) 31°