31 P5.AN.JM.17083103
Level 2
How many right angles has the minute hand of a clock moved from 3.00 p.m. to 4.15 p.m.?
2 m
Right angle Unit conversion
32 P4.AN.JM.17092810
Level 2
In the figure, ∠ACB = ∠DCE = 90° and ∠BCE is 146°.
  1. Name a pair of perpendicular lines.
  2. Find ∠ACD.
2 m
Right angle
33 P3.AN.JM.17102810
Level 2
How many angles inside the figure are greater than a right angle?
2 m
Right angle Estimation of an angle Grid square More than or less than
34 P4.AN.NK.23041226
Level 2
PQRS is a square. Find the value of ∠x.
2 m
Right angle Square
35 P4.AN.JM.17092804
Level 2
In the figure, AB is perpendicular to BC. ∠ABD is twice as large as ∠CBD. Find ∠ABD.
2 m
Right angle Model Times-as-many Units method
36 P3.AN.JC.17103032
Level 2
How many angles inside the figure are smaller than a right angle?
2 m
Estimation of an angle More than or less than
37 P4.AN.JM.17092874
Level 1
How many of the marked angles are less than 90°?
2 m
Estimation of an angle Right angle More than or less than
38 P3.AN.JC.17103034
Level 2
How many angles inside the figure are smaller than a right angle?
2 m
Estimation of an angle More than or less than
39 P6.AN.NK.21060930
Level 1 PSLE
Look at the diagram.
  1. Name the smallest angle.
  2. Name the two angles that are greater than 90°. Give your answers in letters. (Eg a, b)
2 m
Right angle Estimation of an angle More than or less than Min-max
40 P4.AN.JM.17092875
Level 1
How many of the marked angles are more than 90°?
2 m
Estimation of an angle Right angle More than or less than

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