NPQR is a rectangular piece of paper. Corners Q and R are folded upwards as shown. ∠QTU = 23° and ∠RTE = 18 °
- Find ∠QUT
- Find ∠RTQ
(a)
∠QUT
= 180° - 90° - 23°
= 67° (Angles sum of triangle)
(b)
∠RTQ
= 180° - 18° - 18° - 23° - 23°
= 98° (Angles on a straight line)
Answer(s): (a) 67° (b) 98°