11 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
12 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
13 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
14 P4.AN.JM.17092829
Level 2
Through what angle has the hour hand turned from 5 p.m. to 2 a.m. next day?
2 m
Right angle Compass Time
15 P4.AN.JM.17092821
Level 2
How many right angles would a minute hand have moved if it moved from 2.30 p.m. to 3.15 p.m.?
2 m
Right angle Compass Time

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