81 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
82 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
83 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
84 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
85 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

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