Dilate rectangle ABCD by a scale factor of 1/2.
Dilate triangle PQR by a scale factor of 3.
What other information did we need to know in order to
dilate the figures on the coordinate plane?
Words you need to know:
Dilation-
Scale Factor-
Center of dilation-
(Recall the following two terms)
Pre-image-
Image*The image is often denoted by using _______________ after the letters
Demonstration:
Dilate rectangle ABCD about the point (-6, 4) by a scale
factor of 1/2.
Dilate triangle PQR about the point (6, 3) by a scale factor
of 3.
You practice!
Dilate line segment XY by a scale factor of
1/2 about the origin.
Dilate line segment MN by 1/4 about the point
(5, -5).