Scale Factor practice Unit 3-2-3

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

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 is 1/2, what does that mean?

Back

It means the smaller figure is half the size of the larger figure.

Front

If a triangle has a scale factor of 3/4, what does that indicate about its size?

Back

The triangle is 3/4 the size of the original triangle, meaning it is smaller.

Front

What is the scale factor from a small triangle to a large triangle if the scale factor is 2?

Back

The large triangle is twice the size of the small triangle.

Front

Are two figures similar if their corresponding angles are equal?

Back

Yes, if the corresponding angles are equal, the figures are similar regardless of the lengths of their sides.

Front

What does it mean if two figures are not similar?

Back

It means that their corresponding angles are not equal or their sides are not in proportion.

Front

If the sides of a triangle are doubled, what happens to the scale factor?

Back

The scale factor becomes 2, indicating the new triangle is twice the size of the original.

Front

What is the scale factor if a triangle's side length changes from 4 to 1?

Back

The scale factor is 1/4, meaning the new triangle is one-fourth the size of the original.

Front

If a scale factor is 5, what does that indicate about the two figures?

Back

It indicates that the new figure is 5 times larger than the original figure.