PSLE RSTU is a trapezium with RS parallel to UT. RWS and VWU are straight lines and RV = VS. ∠VRU = 91°.
- Find ∠RUW.
- Find ∠SVW.
(a)
∠RUW
= 180° - 91° - 26°
= 63° (Angles sum of triangle)
(b)
∠RWU
= 67° (Alternate angles)
∠SRV
= 67° - 26°
= 41° (Exterior angle of a triangle)
∠SVW
= 180° - 41° - 41° - 26°
= 72° (Angles sum of triangle)
Answer(s): (a) 63°; (b) 72°