Dilations Teacher Twins©2014.

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Dilations Teacher Twins©2014

Warm Up Write the rule for each translation. 2 units right , 3 units up 5 units left, 6 units up 3 units right, 1 unit down 7 units left, 3 units down

Warm Up Answers (x + 2, y + 3) (x – 3, y + 6) (x + 3, y – 1)

Dilations

A dilation is a type of transformation that changes the size of a figure by a scale factor.

Triangle ABC is dilated by a scale factor of 2.

A (- 5, 3) A’ (- 10, 6) B (4, 4) B’ (8, 8 ) C (0, - 2) C’ (0, -4) Dilate by a scale of 2. Multiply both the x and the y value by 2. (x, y) (2x, 2y)

A’(4,-6), B’(-8,10), C’(-10,0) A’(1,-1.5), B’(-2,2.5), C’(-2.5,0)