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8th gr pre algebra
Transformation
Term | Definition |
---|---|
transformation | a change in the size, shape, position, or orientation of a figure |
reflection | a flip; creates a mirror image of the original figure |
rotation | a turn; the figure is turned about a point called the center of rotation. |
translation | a slide; shifts a figure horizontally and/or vertically but does not change its size , shape, or orientation |
dilation | a figure is made larger or smaller with respect to a fixed point |
scale factor (of a dilation) | The value of the ratio of the side lengths of the image to the corresponding side lengths of the original figure. |
congruent figures | figures that have the same size and same shape |
congruent sides | sides that have the same measure |
congruent angles | angles that have the same measure |
similar figures | figures that have the same shape but not necessarily the same size |