81 P6.AP.TL.17090736
Level 2
The figure is made up of a semicircle and an equilateral triangle. The diameter is 42 cm. Find its perimeter.
2 m
Equilateral triangle Circumference Semicircle Composite figure perimeter
82 P6.AN.NK.17052202
Level 2
A square piece of paper is folded as shown in the figure.
  1. Find ∠ADE.
  2. Find ∠EDC.
2 m
Square Angles on a straight line Angles sum of triangle Overlapping angles Folded figure
83 P6.AN.JC.17050719
Level 2
The figure shows a rectangular piece of paper folded at corner C. Find ∠BAC.
2 m
Folded figure Angles on a straight line Right angle Angles sum of triangle Overlapping angles
84 P6.AP.TL.17090744
Level 2 PSLE
Anna has a square piece of paper FGHJ of side 21 cm. She cut along the dotted lines shown in Figure 1 to get one small square of area 9 cm2 and 8 identical right-angled triangles. Triangle KLM in Figure 2 is one such triangle. Find the length of KM.
2 m
Length Square Square & square root Right-angled triangle Composite figure area
85 P6.AN.NK.17052205
Level 2
An equilateral triangle, XYZ, is folded as shown in the figure. Find
  1. ∠BAZ
  2. ∠YBZ.
2 m
Equilateral triangle Angles on a straight line Angles sum of triangle Overlapping angles Folded figure
86 P6.AP.TL.17090713
Level 2 PSLE
In the figure, ABDF and BCEF are rectangles and CDE is a straight line. AB = 6 cm, AF = 8 cm and BF = 10 cm. Find the length of BC.
2 m
Length Rectangle Right-angled triangle Composite figure area
87 P6.AN.JC.23030117
Level 2 PSLE
A rectangular piece of paper is folded to form a trapezium ABCD. The two shaded triangles are identical. Find ∠x.
2 m
Right angle Rectangle Isosceles triangle Trapezium Angles on a straight line Angles sum of triangle Angles at a point Overlapping angles Folded figure
88 P6.AP.TL.17090751
Level 2
The figure is not drawn to scale. Given that GL = GP, NM = 18 cm and the area of GHJK is 45 cm2, find the area of the shaded parts.
2 m
Triangle Composite figure area
89 P6.AN.NK.17050212
Level 2
In the figure, not drawn to scale, O and C are the centres of the circles. AC is a straight line. Find ∠z.
2 m
Circle Exterior angle of a triangle Sum of angles in a quadrilateral
90 P6.AP.TL.17090714
Level 2 PSLE
In the figure, MN = 7 cm, NO = 9 cm, OP = 3 cm and PM = 11 cm. ∠MNO and ∠OPM are right angles. Find the area of the figure MNOP.
2 m
Right-angled triangle Composite figure area

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