math words

15 terms

scale model

a model used to represent 2 small or 2 big to be built to actual size.

similar figures

shapes that have the same shape but do not have to have the same size.

proportional

the relationship between 2 ratios with a constant rate or ratio.

unit rate

a rate that is simplified so that it has a denominator of 1 unit.

corresponding angles

the angles of similar figures that match.

corresponding sides

the sides of similar figures that "match."

cross products

the product of the numerator of one ratio and the denominator of the other ratio. the cross products of any proportion are equal.

equivalent ratios

2 ratios that have the same value.

indirect measurement

finding a measurement using similar figures to find the length, width, or height of objects that are too difficult to measure directly

nonproportional

the relationship between 2 ratios with a rate or ratio that is not constant.

proportion

an equivalent stating that two ratios or rates are equivalent.

rate

a ratio that compares two quantities with different kinds of units.

scale

the scale gives the ratio that compares the measurements of a drawing or model to the measurements of the real object.

scale drawing

a drawing that is used to represent objects that are too large or too small to be drawn at actual size.

scale factor

a scale written as a ratio without units in simplest form.