Scaled Copies Flashcard

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much larger or smaller a scaled copy is compared to the original.

To find the scale factor, divide the length of a side of the larger shape by the length of the corresponding side of the smaller shape.

1.5

2

It means that each dimension of the shape is multiplied by 3, making the shape three times larger.

Two shapes are similar if they have the same shape but different sizes, meaning their corresponding angles are equal and their corresponding sides are in proportion.

XY

RQ

3

The area is reduced to 1/4 of the original area because area scales by the square of the scale factor.