PSLE In the figure, PQUV is a parallelogram and RSTU is a rhombus. VUT is a straight line. ∠QPV = 59°, ∠UQR = 28° and ∠SRT = 32°.
- Find ∠QUR.
- Find ∠QRS.
(a)
∠QUV
= ∠QPV
= 59° (Parallelogram)
∠STR
= ∠SRT
= 32° (Isosceles triangle)
∠RST
= 180° - 32° - 32°
= 104° (Angles sum of triangle)
∠RUT
= ∠RST
= 104° (Rhombus)
∠QUR
= 180° - 59° - 104°
= 17° (Angles on a straight line)
(b)
∠QRU
= 180° - 28° - 17°
= 135° (Angles sum of triangle)
∠TRU
= ∠SRT
= 32° (Rhombus)
∠QRS
= 360° - 135° - 32° - 32°
= 161° (Angles at a point)
Answer(s): (a) 17°; (b) 161°