HJKL is a rectangular piece of paper. Corners K and L are folded upwards as shown. ∠KNP = 18° and ∠LNE = 14 °
- Find ∠KPN
- Find ∠LNK
(a)
∠KPN
= 180° - 90° - 18°
= 72° (Angles sum of triangle)
(b)
∠LNK
= 180° - 14° - 14° - 18° - 18°
= 116° (Angles on a straight line)
Answer(s): (a) 72° (b) 116°