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Words to Review Give an example of the vocabulary word. Image
Preimage
image preimage
Transformation
Isometry 9
6 9
6
9 9
Reflection
Line of reflection
line of reflection
Line of symmetry
Rotation
line of symmetry
Center of rotation The origin is the center of rotation.
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Geometry Notetaking Guide • Chapter 7
Angle of rotation The angle of rotation is 90.
Mtgnt_07 trans wk bk
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1:47 PM
Page 163
Rotational symmetry 60
Translation
The triangle has 60 clockwise and counterclockwise rotational symmetry.
Vector
Initial point D
D
initial point
C
C
Terminal point
Component form D
D terminal point
C
C
Glide reflection
The component form of CD is 具3, 4典.
Composition
First translate, then reflect.
First reflect, then reflect again.
Frieze pattern
Review your notes and Chapter 7 by using the Chapter Review on pages 446–448 of your textbook.
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