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# Ch 5 Ratios, Rates,

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cross products are found by multiplying the denominator of one ratio by the numerator of the other ratio
equivalent ratios two ratios that name the same number
indirect measurement uses proportions and similar triangles to measure distances that would be difficult to measure directly
polygon a closed plane figure formed by three or more line segments that do not cross
proportion an equation stating that two ratios are equal
rate a ratio that compares two quantities measured in different units
ratio a comparison of two quantities by division
scale is the ratio that compares a length in a drawing to the corresponding length in the actual object
scale drawing is an enlarged or reduced drawing of an object that is similar to the actual object
similar polygons two polygons if corresponding angles have the same measure and the lengths of their corresponding sides are proportional
unit cost a unit rate that gives the cost per unit
unit rate the rate for one unit of a given quantity
Created by: cpasteris