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Warm-Up. Practice #69 on the iPad. Vocabulary. Scale factor- how much a shape is enlarged (bigger) or reduced (smaller). Scale factor > 1 = bigger Scale factor < 1 = smaller Dilation- transformation that changes the size but not the shape of a figure. Example.
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Warm-Up Practice #69 on the iPad
Vocabulary • Scale factor- how much a shape is enlarged (bigger) or reduced (smaller). • Scale factor > 1 = bigger • Scale factor < 1 = smaller • Dilation- transformation that changes the size but not the shape of a figure.
Example Determine the scale factor used to dilate ΔABC into ΔDEF Fraction: Ratio: Decimal: Percent: A D 8 21 18 E F C B 15
Example Determine the coordinates of ΔA’B’C’ if ΔABC is dilated by a factor of: a) b) 4