In the figure, MNPQ is a parallelogram and RP = RQ.
- Find ∠s.
- Find ∠t.
(a)
∠MRN = ∠MNR (Isosceles triangle)
∠s
= 180° - 42° - 42° - 68°
= 28° (Interior angles)
(b)
∠MRN
= 180° - 42° - 42°
= 96° (Angles sum of triangle)
∠t
= 360° - 96°
= 264° (Angles at a point)
Answer(s): (a) 28°; (b) 264°