In the figure, HJKL is a square and ∠JML = 42°. Calculate
- ∠LNK
- ∠JLN
(a)
∠JNM
= 180° - 90° - 42°
= 48° (Angles sum of triangle)
∠LNK = 48° (Vertically opposite angles)
(b)
∠LJN = 90° ÷ 2 = 45°
∠JLN
= 180° - 42° - 90° - 45°
= 3° (Angles sum of triangle)
Answer(s): (a) 48°; (b) 3°