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Proportions
Vocabulary
15
Mathematics
7th Grade
11/07/2006

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Term
cross products
Definition
the product of the numerator in one ratio and the denominator in the other ratio
Term
corresponding angles
Definition
matching angles of two or more polygons
Term
corresponding sides
Definition
matching sides of two or more polygons
Term
equivalent ratios
Definition
ratios that name the same comparison
Term
indirect measurement
Definition
a method of using proportions to find an unknown length or distance in similar figures
Term
proportion
Definition
an equation stating that two ratios are equivalent
Term
rate
Definition
a ratio that compares two quantities in different units
Term
ratio
Definition
a comparison of two quantities by division
Term
scale
Definition
the ratio between two sets of measurements
Term
scale drawing
Definition
a proportional drawing of an object
Term
scale factor
Definition
a ratio used to create a scale model or scale drawing
Term
scale model
Definition
a proportional model of a three-dimensional object
Term
similar
Definition
figures that have the same shape, but not necessarily the same size
Term
unit conversion factor
Definition
a fraction in which the numerator and denominator represent the same quantity, but in different units
Term
unit rate
Definition
a rate where the second quantity is one
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