LMNP is a rectangular piece of paper. Corners N and P are folded upwards as shown. ∠NRS = 23° and ∠PRE = 16 °
- Find ∠NSR
- Find ∠PRN
(a)
∠NSR
= 180° - 90° - 23°
= 67° (Angles sum of triangle)
(b)
∠PRN
= 180° - 16° - 16° - 23° - 23°
= 102° (Angles on a straight line)
Answer(s): (a) 67° (b) 102°