Grade 4 - Progress in Mathematics

(Marvins-Underground-K-12) #1
Update your skills. See page 22.

Turns


10-10


1
4 turn

1
2 turn

A full turn measures 360°.

Each new position is a
turn image of the figure.

A turn, or rotation, is the movement
of a figure around a point.

Yo u can turn a figure in either direction,
clockwiseor counterclockwise.

If you can turn a tracing of a figure
halfway around so that the tracing and
the figure match exactly, the figure has
half-turn symmetry.

This figure has half-turn symmetry.

1
4 turn
90 °

1
2 turn
180 °

3
4 turn
270 °

4
4 or 1 turn
360 °

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