Scale Factor, Scale Copy, and Corresponding parts

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, a quantity. It is used to determine how much larger or smaller a figure is compared to another figure.

Front

What does it mean for one figure to be a scaled copy of another?

Back

A figure is a scaled copy of another if it has the same shape but is a different size, determined by a scale factor.

Front

What are corresponding sides?

Back

Corresponding sides are the sides of two or more figures that are in the same relative position.

Front

What are corresponding angles?

Back

Corresponding angles are the angles in two or more figures that are in the same relative position.

Front

If the scale factor is 2, what does that mean?

Back

It means that the new figure is twice as large as the original figure.

Front

If triangle ABC has a scale factor of 1/2 to triangle DEF, how does the size of triangle DEF compare to triangle ABC?

Back

Triangle DEF is half the size of triangle ABC.

Front

How do you find the scale factor between two similar figures?

Back

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

Front

If the scale factor from a large triangle to a small triangle is 1/3, what does this indicate?

Back

This indicates that the small triangle is one-third the size of the large triangle.

Front

What is the relationship between corresponding sides and scale factor?

Back

The lengths of corresponding sides of similar figures are proportional to the scale factor.

Front

If the scale factor is 3, what is the ratio of the lengths of corresponding sides?

Back

The ratio of the lengths of corresponding sides is 3:1.