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Angle is a way of measuring
turning around.
Imagine you are standing facing 'North'. If you turn fully around once, going back to face 'North' again, you have done a full turn. |
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| If you start from 'North' and turn
'East', you have completed a quarter turn.
This is given a special name: a right angle. |
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If you start from 'North' and turn to the 'South' you have completed a half turn. This is also given a special name: a straight angle. | ||||||||