The figure shows a parallelogram. Find
- ∠h
- ∠g
- ∠f
(a)
∠JNK
= 180° - 39° - 63°
= 78° (Angles sum of triangle)
∠h = ∠JNK = 78° (Vertically opposite angles)
(b)
∠g = ∠JIK = 55° (Alternate angles)
(c)
∠KNJ = ∠h = 78° (Vertically opposite angles)
∠f
= 78° - 55°
= 23° (Exterior angle of a triangle)
Answer(s): (a) 78°; (b) 55°; (c) 23°