An equilateral triangle, DEF, is folded as shown in the figure. Find
- ∠DCF
- ∠EDF.
(a)
∠CFD = 60° (Equilateral triangle DEF)
∠DCF
= 180° - 60° - 58° (Angles sum of triangle)
= 62°
(b)
∠EDF
= 180° - 58° - 58°
= 64° (Angles on a straight line)
Answer(s): (a) 62°; (b) 64°