Dilations and Similarity in the Coordinate Plane 7-6
Dilations and Similarity in the Coordinate Plane 7-6
Dilations and Similarity in the Coordinate Plane 7-6
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LESSON<br />
7-6<br />
<strong>Dilations</strong> <strong>and</strong> <strong>Similarity</strong><br />
<strong>in</strong> <strong>the</strong> Coord<strong>in</strong>ate <strong>Plane</strong><br />
Lesson Objectives (p. 495):<br />
______________________________________________________________<br />
______________________________________________________________<br />
Vocabulary<br />
1. Dilation (p. 495): ________________________________________________<br />
______________________________________________________________<br />
2. Scale factor (p. 495): _____________________________________________<br />
______________________________________________________________<br />
Key Concepts<br />
3. Get Organized Write <strong>the</strong> def<strong>in</strong>ition of a dilation, a property of dilations, <strong>and</strong><br />
an example <strong>and</strong> nonexample of a dilation. (p. 497).<br />
Def<strong>in</strong>ition<br />
Property<br />
<strong>Dilations</strong><br />
Example<br />
Nonexample<br />
Copyright © by Holt, R<strong>in</strong>ehart <strong>and</strong> W<strong>in</strong>ston.<br />
163 Geometry<br />
All rights reserved.
LESSON<br />
7-6<br />
<strong>Dilations</strong> <strong>and</strong> <strong>Similarity</strong><br />
<strong>in</strong> <strong>the</strong> Coord<strong>in</strong>ate <strong>Plane</strong><br />
Lesson Objectives (p. 495):<br />
______________________________________________________________<br />
apply similarity properties <strong>in</strong> <strong>the</strong> coord<strong>in</strong>ate plane; use coord<strong>in</strong>ate proof to<br />
______________________________________________________________<br />
prove figures similar.<br />
Vocabulary<br />
1. Dilation (p. 495): ________________________________________________<br />
a transformation that changes <strong>the</strong> size of a figure but not its<br />
______________________________________________________________<br />
shape.<br />
2. Scale factor (p. 495): _____________________________________________<br />
a number that describes how much <strong>the</strong> figure is<br />
______________________________________________________________<br />
enlarged or reduced.<br />
Key Concepts<br />
3. Get Organized Write <strong>the</strong> def<strong>in</strong>ition of a dilation, a property of dilations, <strong>and</strong><br />
an example <strong>and</strong> nonexample of a dilation. (p. 497).<br />
Def<strong>in</strong>ition<br />
A dilation is a transformation<br />
for which <strong>the</strong> preimage <strong>and</strong><br />
image are .<br />
Property<br />
<strong>Dilations</strong> change <strong>the</strong> size, but not<br />
<strong>the</strong> shape, of a figure.<br />
<strong>Dilations</strong><br />
Possible answer:<br />
Possible answer:<br />
Example<br />
Nonexample<br />
Copyright © by Holt, R<strong>in</strong>ehart <strong>and</strong> W<strong>in</strong>ston.<br />
163 Geometry<br />
All rights reserved.
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