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