9-6 Dilations Vocab: Dilation: A transformation that changes the size of the shape Enlargement: A dilation that makes a shape bigger (scale factor greater.

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Presentation transcript:

9-6 Dilations Vocab: Dilation: A transformation that changes the size of the shape Enlargement: A dilation that makes a shape bigger (scale factor greater than 1) Reduction: A dilation that makes a shape smaller (scale factor smaller than 1, but greater than 0)

Determining Scale Factor Scale Factor = dilation length/original length r means scale factor in this book Ex 1: Find the scale factor if BA is 4 and B’A’ is 12

Graphing Dilations Ex 2: Graph A(–2, –2), B(–1, 2), C(2, 1); r = 2 Ex 3: Graph A(0, 0), B(3, 3), C(6, 3), D(6, –3); r = 1/3

Classwork/Homework P. 678 16-26 even not 20

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