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# Geometry

### Ch. 8 Vocab

TermDefinition
Line of Symmetry A line that divides a figure into mirror images
Image The result of a transformation of a point, line, or figure
Transformation A change in the position, shape, or size of a figure
Angle of Rotation The number of degrees that a figure rotates
Reflection A transformation that flips a figure over a line
Reflectional Symmetry When a figure is reflected over a line, its image matches the original figure
Scale Factor The ratio of a length in the images to the corresponding length in the original figure
Line of Reflection A line across which a figure is reflected
Center of Rotation A fixed point about which a figure is rotated
Reduction A dilation with a scale factor less than 1
Enlargement A dilation with a scale factor greater than 1
Translation A transformation that moves each point of a figure the same distance and in the same direction
Dilation A transformation in which a figure and its image is similar
Rotational Symmetry It can be rotated 180 degrees or less and match the original figure
Rotation Transformation that turns a figure about a fixed point
Created by: mjys02