1. 6.7 Dilation
12
HW pg. 412 #3­21
odds
November 21, 2014
Bellwork
13.5
23.8

2. 6.7 Dilation
HW pg. 412 #3­21
odds
November 21, 2014
6.7 Similarity Transformations
Dilation: stretches or shrinks
Center of Dilation: fixed point
Scale Factor: ratio of a side length to corresponding side length of original
Coordinate Notation for a Dilation: (x,y) ‐> (kx, ky)
Reduction: 0 < k < 1
Enlargement: k > 1

3. 6.7 Dilation
HW pg. 412 #3­21
odds
November 21, 2014

4. 6.7 Dilation
HW pg. 412 #3­21
odds
November 21, 2014

5. 6.7 Dilation
HW pg. 412 #3­21
odds
November 21, 2014
Reading Diagrams
A point of the figure and its image lie on the same ray from the
origin for a center of dilation at the origin.

6. 6.7 Dilation
HW pg. 412 #3­21
odds
November 21, 2014
HW pg. 412 #3‐21 odds