Master scale factors and similarity with adaptive practice. Learn to enlarge and reduce figures while preserving their shape.
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Create Free AccountA dilation is a transformation that enlarges or reduces a figure by a scale factor from a center point. If the scale factor is greater than 1, the figure gets larger. If it's between 0 and 1, the figure gets smaller. Dilations preserve shape but change size.
For a dilation centered at the origin with scale factor k, multiply each coordinate by k. If point (x, y) is dilated by factor 2, the image is (2x, 2y). For other centers, subtract the center, multiply by k, then add the center back.