MNPQ is a rectangular piece of paper. Corners P and Q are folded upwards as shown. ∠PST = 17° and ∠QSE = 11 °
- Find ∠PTS
- Find ∠QSP
(a)
∠PTS
= 180° - 90° - 17°
= 73° (Angles sum of triangle)
(b)
∠QSP
= 180° - 11° - 11° - 17° - 17°
= 124° (Angles on a straight line)
Answer(s): (a) 73° (b) 124°