In the figure, RSTU is a parallelogram and VT = VU.
- Find ∠w.
- Find ∠x.
(a)
∠RVS = ∠RSV (Isosceles triangle)
∠w
= 180° - 45° - 45° - 71°
= 19° (Interior angles)
(b)
∠RVS
= 180° - 45° - 45°
= 90° (Angles sum of triangle)
∠x
= 360° - 90°
= 270° (Angles at a point)
Answer(s): (a) 19°; (b) 270°