An equilateral triangle, WXY, is folded as shown in the figure. Find
- ∠CBY
- ∠XCY.
(a)
∠BYC = 60° (Equilateral triangle WXY)
∠CBY
= 180° - 60° - 57° (Angles sum of triangle)
= 63°
(b)
∠XCY
= 180° - 57° - 57°
= 66° (Angles on a straight line)
Answer(s): (a) 63°; (b) 66°