The figure shows a parallelogram. Find
- ∠h
- ∠g
- ∠f
(a)
∠JNK
= 180° - 30° - 63°
= 87° (Angles sum of triangle)
∠h = ∠JNK = 87° (Vertically opposite angles)
(b)
∠g = ∠JIK = 69° (Alternate angles)
(c)
∠KNJ = ∠h = 87° (Vertically opposite angles)
∠f
= 87° - 69°
= 18° (Exterior angle of a triangle)
Answer(s): (a) 87°; (b) 69°; (c) 18°