PSLE PQRS and QSTU are rhombuses. RVS is a straight line.
- Find ∠SQV.
- Find ∠RST.
(a)
∠QSR
= (180° - 96°) ÷2
= 84° ÷ 2
= 42° (Isosceles triangle)
∠SQV
= 180° - 132° - 42°
= 6° (Angles sum of triangle)
(b)
∠QUT
= 360° - 303°
= 57° (Angles at a point)
∠QST = ∠QUT = 57° (Rhombus)
∠RST
= 57° - 42°
= 15°
Answer(s): (a) 6°; (b) 15°