QRST is a rectangular piece of paper. Corners S and T are folded upwards as shown. ∠SVW = 14° and ∠TVE = 12 °
- Find ∠SWV
- Find ∠TVS
(a)
∠SWV
= 180° - 90° - 14°
= 76° (Angles sum of triangle)
(b)
∠TVS
= 180° - 12° - 12° - 14° - 14°
= 128° (Angles on a straight line)
Answer(s): (a) 76° (b) 128°