In the figure, PQRS is a parallelogram and TR = TS.
- Find ∠u.
- Find ∠v.
(a)
∠PTQ = ∠PQT (Isosceles triangle)
∠u
= 180° - 47° - 47° - 68°
= 18° (Interior angles)
(b)
∠PTQ
= 180° - 47° - 47°
= 86° (Angles sum of triangle)
∠v
= 360° - 86°
= 274° (Angles at a point)
Answer(s): (a) 18°; (b) 274°