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compare and contrast reflection and rotation

by: angelin, sneha, morgan, sarah
by

Angelin Shanmugam

on 2 May 2013

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Transcript of compare and contrast reflection and rotation

Compare& Contrast reflection & rotation Comparing rotation and reflection Rotation ~ A transformation that rotates or turns a figure around a fixed point called a center of rotation.

~ The coordinates allow us to easily describe the image and its pre-image. Images: Rotation 360 degrees Reflection ~ A transformation across a line that
produces a mirror image

~ the line of reflection lies directly in the middle between the figure and its image--it is the perpendicular bisector of the segment joining any point to its image. Images: Reflection across x and y-axis By: Morgan , Sarah, Sneha ,Angelin ~ They are both on a coordinate plane.

~ You can rotate and reflect the same shape.

~ Size remains constant in reflection and rotation.

~they can both be in different quadrants. ~When you reflect a point across the x-axis, the x-coordinate remains the same,but the y-coordinate is transformed into its opposite. ~When you reflect a point across the y-axis, the y-coordinate remains the same,
but the x-coordinate is transformed into its opposite. ~ A positive angle of rotation turns the figure counterclockwise, ~ a negative angle of rotation turns the figure in a clockwise direction.
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