In the figure, GJ is parallel to LK and GM is parallel to HN. GML is a straight line, ∠GMN = 100°. ∠MGH = 101° and the sum of ∠HJK and ∠KLM is 141°. Find
- ∠MNH
- ∠LKJ
(a)
∠MNH
= 180° - 100°
= 80° (Interior angles)
(b)
∠LKJ
= 360° - 141° - 101°
= 118° (Sum of angles in a quadrilateral)
Answer(s): (a) 80°; (b) 118°