Warm-Up

Post on 14-Feb-2016

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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. - PowerPoint PPT Presentation

Transcript of Warm-Up

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

B C

D

E F15

18 21 8

Example

Determine the coordinatesof ΔA’B’C’ if ΔABC is dilated by a factor of: a)

b) 4