scale factor

Front

What is a scale factor?

Back

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

Front

If the scale factor is 1/2, what does that mean?

Back

It means that the new figure is half the size of the original figure.

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 new figure by the length of the corresponding side of the original figure.

Front

What is the scale factor from ΔDEF to ΔABC if the sides of ΔDEF are 3 cm and the corresponding sides of ΔABC are 6 cm?

Back

The scale factor is 1/2.

Front

If the scale factor is 4, how does it affect the area of a shape?

Back

The area of the new shape will be 4 times larger than the area of the original shape.

Front

If a triangle has a scale factor of 2, what happens to its perimeter?

Back

The perimeter of the new triangle will be 2 times the perimeter of the original triangle.

Front

What is the scale factor if the original length is 10 m and the new length is 5 m?

Back

The scale factor is 1/2.

Front

If the scale factor is 3, what is the new length if the original length is 4 m?

Back

The new length is 12 m.

Front

What is the relationship between scale factor and similar triangles?

Back

Similar triangles have the same shape but different sizes, and their corresponding sides are proportional based on the scale factor.

Front

If the scale factor is 1/4, what happens to the dimensions of the original shape?

Back

The dimensions of the original shape will be reduced to one-fourth of their original size.