In the figure, STUV is a parallelogram and WU = WV.
- Find ∠x.
- Find ∠y.
(a)
∠SWT = ∠STW (Isosceles triangle)
∠x
= 180° - 46° - 46° - 71°
= 17° (Interior angles)
(b)
∠SWT
= 180° - 46° - 46°
= 88° (Angles sum of triangle)
∠y
= 360° - 88°
= 272° (Angles at a point)
Answer(s): (a) 17°; (b) 272°