Dilations
Explanation
A dilation changes the size of a shape but keeps the same shape (similar figures).
Key points:
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Center of dilation: fixed point
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Scale factor: ratio of new size to original size
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k > 1 → enlargement
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0 < k < 1 → reduction
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Example: Dilate point (2,3) with scale factor 2 from origin → (4,6)