Unit 1 Review

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 from one figure to another?

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

If the scale factor from figure B to figure A is 2, what does this mean?

Back

It means that figure A is twice as large as figure B.

Front

If the scale factor from figure B to figure A is 1/2, what does this mean?

Back

It means that figure B is half the size of figure A.

Front

What is a scaled copy?

Back

A scaled copy is a figure that is similar to another figure but is a different size, created by multiplying the dimensions of the original figure by a scale factor.

Front

If figure A has a side length of 10 units and the scale factor to figure B is 2, what is the side length of figure B?

Back

The side length of figure B is 20 units.

Front

If figure A has a side length of 10 units and the scale factor to figure B is 1/2, what is the side length of figure B?

Back

The side length of figure B is 5 units.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but not necessarily the same size, and their corresponding angles are equal.

Front

How do you determine which side length corresponds to another in similar figures?

Back

Corresponding side lengths in similar figures are in the same relative position and are proportional based on the scale factor.

Front

If HJ is a side length in figure A, which side length corresponds to it in figure B if AB is the corresponding side?

Back

AB corresponds to HJ in figure A.