In the figure, GHJK is a parallelogram and LJ = LK.
- Find ∠m.
- Find ∠n.
(a)
∠GLH = ∠GHL (Isosceles triangle)
∠m
= 180° - 42° - 42° - 69°
= 27° (Interior angles)
(b)
∠GLH
= 180° - 42° - 42°
= 96° (Angles sum of triangle)
∠n
= 360° - 96°
= 264° (Angles at a point)
Answer(s): (a) 27°; (b) 264°