PQRS is a rhombus, LMS and QMR are straight lines. If QM = MS, ∠MSR = 18° and ∠NQR = 36°, find
- ∠MRS
- ∠NLM
(a)
∠MRS
= 85° - 18°
= 67° (Exterior angle of a triangle)
(b)
∠QLM
= 85° - 36°
= 49° (Exterior angle of a triangle)
∠NLM
= 180° - 49°
= 131° (Angles on a straight line)
Answer(s): (a) 67°; (b) 131°