Examples of Dilations

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A little background

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Objectives

Students know that dilations map circles to circles and ellipses to ellipses with the same shape.
Students know that to shrink or magnify a dilated figure back to its original size from center 0 with scale factor r you must dilate the figure by a scale factor of 1/r.

Prior Knowledge

Geometry2-D Shapes
GeometryDilation

45 mins 8.G.A.3

EngagyNY Curriculum by engageny, used under CC-BY-SA 3.0