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Show a shape and its dilated image (bigger or smaller). 'What's the scale factor?' A triangle with sides 3,4,5 becomes 6,8,10 → SF=2. Another goes from 12,8 to 3,2 → SF=1/4. Do 5 problems. Key: dilation makes a shape BIGGER (SF>1) or SMALLER (SF<1) while keeping the same shape. Unlike other transfor

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