PSLE STUV is a trapezium with ST parallel to VU. SXT and WXV are straight lines and SW = WT. ∠WSV = 94°.
- Find ∠SVX.
- Find ∠TWX.
(a)
∠SVX
= 180° - 94° - 25°
= 61° (Angles sum of triangle)
(b)
∠SXV
= 67° (Alternate angles)
∠TSW
= 67° - 25°
= 42° (Exterior angle of a triangle)
∠TWX
= 180° - 42° - 42° - 25°
= 71° (Angles sum of triangle)
Answer(s): (a) 61°; (b) 71°