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Chapter 4 Math Vocab
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Gravity
Terms in this set (10)
Rate
A ratio that compares two quantities measured with different units
Unit Rate
A rate whose denominator is 1 when it is written as a fraction.
Equivalent Ratios
Ratios with the same comparison Ex: 1/2 = 2/4
Proportion
An equation stating that two ratios are equivalent.
Cross Product
When seeing if 1/5 = 15/75, you multiply 1 and 75 then multiply 5 and 15. If they are equal, the ratios are proportional.
Similar
Figures with the same shape but not necessarily the same size. The corresponding sides are proportional and the corresponding angles are equal.
Scale factor
Ex: 5:1 means that the model is 5 times smaller or bigger than the actual dimensions of the object
Scale
The ratio between two sets of measurements.
Scale Drawing
A proportional 2-dimensional drawing of an object
Scale Model
A proportional 3-dimensional model of an object
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