A comparison of two numbers by division
An equation stating that two ratios are equal
The inside numbers of a proportion/ratio
The outside numbers of a proportion/ratio (think exterior)
the number (x) such that a/x = x/b, where a,b, and x are positive numbers
Polygons that have the same shape, but not necessarily the same size. Corresponding sides of similar polygons are proportional.
the ratio of the lengths of two corresponding sides of two similar polygons
A transformation that changes the size of an object, but not the shape.
a lessening or making smaller
an increase in size of all dimensions in the same proportions