RSTU is a rhombus. RUV is an equilateral triangle. Find
- ∠VRS
- ∠RSU
(a)
∠VRU
= 180° ÷ 3
= 60° (Equilateral triangle)
∠SRU = ∠STU = 112° (Rhombus)
∠VRS
= 112° + 60°
= 172°
(b)
∠RSU
= (180° - 112°) ÷ 2
= 34° (Isosceles triangle)
Answer(s): (a) 172°; (b) 34°