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Geometry-Chapter 6
Geometry-Chapter 6 vocabulary
| Question | Answer |
|---|---|
| a comparison of two numbers using division. | ratio |
| an equation that states that two ratios are equal | proportion |
| the middle terms of a proportion | means |
| the first and last terms of a proportion | extremes |
| for two positive numbers a and b, the positive number x that satisfies a/x = b/x. | geometric mean |
| a drawing that is the same shape as the object it represents | scale drawing |
| a ratio that describes how the dimensions in a scale drawing are related to the actual dimensions of the object | scale |
| two polygons such that their cooresponding angles are congruent and the lengths of cooresponding sides are proportional | similar polygons |
| the ratio of the lenghts of two cooresponding sides of two similar plygons | scale factor of two similar polygons |
| a transformation that stretches or shrinks a figure to create a similar figure | dilation |
| in a dilation, the fixed point about which the figure is enlarged or reduced | center of dilation |
| in a dilation, the ratio of a side length of the image to a cooresponding side lenth of the original figure | scale factor of a dilation |
| a dilation with a scale factor between 0 and 1 | reduction |
| a dilation with a scale factor greater than 1 | enlargement |
Created by:
aelohaus
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