The figure shows a parallelogram. Find
- ∠e
- ∠d
- ∠c
(a)
∠GJH
= 180° - 42° - 68°
= 70° (Angles sum of triangle)
∠e = ∠GJH = 70° (Vertically opposite angles)
(b)
∠d = ∠GFH = 51° (Alternate angles)
(c)
∠HJG = ∠e = 70° (Vertically opposite angles)
∠c
= 70° - 51°
= 19° (Exterior angle of a triangle)
Answer(s): (a) 70°; (b) 51°; (c) 19°