The figure shows a parallelogram. Find
- ∠h
- ∠g
- ∠f
(a)
∠JNK
= 180° - 30° - 60°
= 90° (Angles sum of triangle)
∠h = ∠JNK = 90° (Vertically opposite angles)
(b)
∠g = ∠JIK = 67° (Alternate angles)
(c)
∠KNJ = ∠h = 90° (Vertically opposite angles)
∠f
= 90° - 67°
= 23° (Exterior angle of a triangle)
Answer(s): (a) 90°; (b) 67°; (c) 23°