| Term | Definition |
|---|
| ratio | a comparison of 2 #s using division; ratio of a to b (b not = 0) can be written a to b, a:b, or a/b 269 |
| equivalent ratios | 2 or more ratios that have the same value 270 |
| proportion | an equation that states that 2 ratios are equivalent 275 |
| cross product | produc tof numerator of 1 ratio and the denominator of another ratio, cross products of a proportion are equal 280 |
| similar figures | figures have same shape, not necessarily same size, congruent corresponding angles, equal ratios of corresponding side lengths, ~=similar symbol 288 |
| corresponding parts | a pr of sides or angles that have the same relative pos in 2 figures 288 |
| congruent figures | figures w/ same size, and shape, corresponding angles and sides of congruent figures are congruent 290 |
| scale drawing | 2D model that is similar to the object it's representing 300 |
| scale model | 3D model that is similar to the object it's representing 300 |
| scale | ratio for the relationship between dimensions of scale drawing/model and actual dimensions of an object 300 |
| outcomes | the possible results of an experiment 306 |
| event | outcome or collection of outcomes 306 |
| favorable outcomes | outcomes that correspond to a specified event 306 |
| probability | # from 0 to 1 that measures the likelihood that an event will occur 306 |
| theoretical probability | all outcomes equally likely, ratio= # of favorable outcomes to # of possible outcomes 307 |
| experimental probability | probability based on repeated trials of an experiment, ratio= # of successes/favorable outcomes to #of trials 307 |
| odds in favor | all outcomes equally likely, ratio= # of favorable outcomes to # of unfavorable outcomes 308 |
| odds against | all outcomes equally likely, ratio= # of unfavorable outcomes to # of favorable outcomes 308 |
| tree diagram | diagram that usesbranching to list all possible choices or outcomes 313 |
| counting principle | event occurs in m ways, and for ea way, 2nd event occurs in n ways, #of ways event can occur= m x n 314 |
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