71 P6.AN.NK.17052107
Level 2
In the figure, AOB, COD, EOF and GOH are straight lines. Find ∠s + ∠k + ∠l + ∠m + ∠n + ∠p + ∠q + ∠r.
2 m
Angles sum of triangle Angles at a point Exterior angle of a triangle Interior angles
72 P6.AP.TL.17090715
Level 2
W, X, Y and Z are mid-points of the sides of the square. If the area of the square is 100 cm2, what is the area of the unshaded triangles? Leave your answer in mixed number.
2 m
Square Triangle Composite figure area Mixed numbers F 4 operations
73 P6.AN.NK.21060909
Level 2 PSLE
A piece of paper in the shape of an equilateral triangle is folded along the dotted line as shown. Find ∠x.
2 m
Equilateral triangle Angles sum of triangle Overlapping angles Folded figure
74 P6.AP.TL.17090738
Level 2 PSLE
The shaded figure is formed using 3 squares and 3 equilateral triangles. The length of the straight line PQ is 15 cm. Find the perimeter of the shaded figure.
2 m
Square Equilateral triangle Composite figure perimeter
75 P6.RA.TL.17042609
Level 3
The figure is made up of two squares and a triangle. The ratio of the area of Triangle X to that of Square Z is 11 : 1. The ratio of the shaded area to that of the unshaded area is 1 : 3. If the difference between areas of Triangle X and Square Y is 464 cm2, what is the area of Square Z?
3 m
Ratio to units Area Perimeter Unchanged total Units table
76 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
77 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
78 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
79 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
80 P6.PA.JM.18011213
Level 3
Study the pattern.
  1. Complete the table.
  2. How many dots are there on each side of the triangle if the total number of dots on the triangle is 102?
3 m
Equal intervals

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