| Term | Definition |
|---|
| ratio | a comparison of two quantities. |
| proportion | An equation starting that two ratios are equivalaent. |
| proportional | (adj.) Having a constant relation in degree or number |
| unit cost | The cost of one unit of a product. |
| similar figures | figures that are the same shape, have corresponding, congruent angles, and have corresponding sides that are proportional in length |
| scale factor | a number used as a multiplier in scaling |
| deduction | the act of subtracting (removing a part from the whole) |
| estimate | an approximate calculation of quantity or degree or worth |
| scale drawing | A diagram of an object in which the dimensions are in proportion to the actual dimensions of the object. |
| congruent figures | Two figures that have the same shape and size the coresponding sides and angles sre congruent |
| equilateral triangle | a triangle with three equal sides |
| regular polygon | a polygon with all sides and all angles equal |
| isosceles triangle | a triangle with two equal sides |
| scalene triangle | a triangle with no two sides of equal length |
| decimal | a proper fraction whose denominator is a power of 10 |
| fraction | comparison of parts to a whole |
| percent | a ratio that compares a number to 100. |
| straight angle | an angle of 180 degrees |
| obtuse angle | an angle between 90 and 180 degrees |
| acute angle | an angle less than 90 degrees but more than 0 degrees |
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