Key Idea A point or a shape can be rotated about a fixed
point.
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Examples
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The shape can also be located on the point
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Checking for Understanding Describe the following as:
translation, reflection, or rotation.
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Describing Rotations ClockwiseCounterclockwise
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Describing Rotations 90 degrees clockwise180 degrees clockwise
270 degrees clockwise360 or 0 degrees clockwise The blue arrow is
the initial position The red arrow is the result of a rotation
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90 degrees clockwise 270 degrees counterclockwise 180 degrees
clockwise 180 degrees counterclockwise 270 degrees clockwise 90
degrees counterclockwise 360 or 0 degrees clockwise 360 or 0
degrees counterclockwise The blue arrow is the initial position The
red arrow is the result of a rotation
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Describe the rotation
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Rotation of Shapes Activity Cut out your shapes
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Write the coordinate points of the original shape. Translate
the shape (x 6, y 3). Record the new coordinates A BC
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Write the coordinate points of the original shape. Reflect the
shape over the x axis. Record the new coordinates A BC
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Write the coordinate points of the original shape. Reflect the
shape over the y axis. Record the new coordinates A BC
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Write the coordinate points of the original shape. Rotate the
shape 90 degrees clockwise. Record the new coordinates A BC
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Write the coordinate points of the original shape. Rotate the
shape 180 degrees clockwise. Record the new coordinates A B C
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Write the coordinate points of the original shape. Rotate the
shape 90 degrees counter clockwise. Record the new coordinates A B
C D
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A B C D
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What do you notice about the new coordinates of your rotated
shapes?
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Theif!
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Rotate 90 degrees clockwise A B C D
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Rotate 90 degrees counterclockwise A B C
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Rotate 180 degrees counterclockwise A B C
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Closure How is a rotation different from a translation?
