In the figure, MNQ is a triangle with NQ = NM, while LMNP is a parallelogram and PNQ is a straight line. Given ∠NPL = 98°, ∠KNQ = 141° and ∠LKN = 53°, find
- ∠NMQ
- ∠KNM
(a)
∠LPN
= ∠MNQ
= 98° (Corresponding angles)
∠NMQ
= (180° - 98°) ÷ 2
= 41° (Isosceles triangle)
(b)
∠KNM
= 360° - 141° - 98°
= 121° (Angles at a point)
Answer(s): (a) 41°; (b) 121°