An equilateral triangle, GHJ, is folded as shown in the figure. Find
- ∠YXJ
- ∠HYJ.
(a)
∠XJY = 60° (Equilateral triangle GHJ)
∠YXJ
= 180° - 60° - 56° (Angles sum of triangle)
= 64°
(b)
∠HYJ
= 180° - 56° - 56°
= 68° (Angles on a straight line)
Answer(s): (a) 64°; (b) 68°