QRST is a rhombus, MNT and RNS are straight lines. If RN = NT, ∠NTS = 19° and ∠PRS = 26°, find
- ∠NST
- ∠PMN
(a)
∠NST
= 82° - 19°
= 63° (Exterior angle of a triangle)
(b)
∠RMN
= 82° - 26°
= 56° (Exterior angle of a triangle)
∠PMN
= 180° - 56°
= 124° (Angles on a straight line)
Answer(s): (a) 63°; (b) 124°