PSLE In the figure, TUYZ is a parallelogram and VWXY is a rhombus. ZYX is a straight line. ∠UTZ = 57°, ∠YUV = 28° and ∠WVX = 33°.
- Find ∠UYV.
- Find ∠UVW.
(a)
∠UYZ
= ∠UTZ
= 57° (Parallelogram)
∠WXV
= ∠WVX
= 33° (Isosceles triangle)
∠VWX
= 180° - 33° - 33°
= 102° (Angles sum of triangle)
∠VYX
= ∠VWX
= 102° (Rhombus)
∠UYV
= 180° - 57° - 102°
= 21° (Angles on a straight line)
(b)
∠UVY
= 180° - 28° - 21°
= 131° (Angles sum of triangle)
∠XVY
= ∠WVX
= 33° (Rhombus)
∠UVW
= 360° - 131° - 33° - 33°
= 163° (Angles at a point)
Answer(s): (a) 21°; (b) 163°