STUV is a rectangular piece of paper. Corners U and V are folded upwards as shown. ∠UXY = 20° and ∠VXE = 15 °
- Find ∠UYX
- Find ∠VXU
(a)
∠UYX
= 180° - 90° - 20°
= 70° (Angles sum of triangle)
(b)
∠VXU
= 180° - 15° - 15° - 20° - 20°
= 110° (Angles on a straight line)
Answer(s): (a) 70° (b) 110°