RSTU is a rhombus, NPU and SPT are straight lines. If SP = PU, ∠PUT = 21° and ∠QST = 28°, find
- ∠PTU
- ∠QNP
(a)
∠PTU
= 84° - 21°
= 63° (Exterior angle of a triangle)
(b)
∠SNP
= 84° - 28°
= 56° (Exterior angle of a triangle)
∠QNP
= 180° - 56°
= 124° (Angles on a straight line)
Answer(s): (a) 63°; (b) 124°