An equilateral triangle, YZA, is folded as shown in the figure. Find
- ∠RQA
- ∠ZRA.
(a)
∠QAR = 60° (Equilateral triangle YZA)
∠RQA
= 180° - 60° - 53° (Angles sum of triangle)
= 67°
(b)
∠ZRA
= 180° - 53° - 53°
= 74° (Angles on a straight line)
Answer(s): (a) 67°; (b) 74°