Scaled Copies

Front

What is a scaled copy?

Back

A scaled copy is a figure that is similar to another figure but is either larger or smaller by a certain scale factor.

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is the ratio of the lengths of two corresponding sides of two similar figures.

Front

If the scale factor is 2, how does the size of the scaled copy compare to the original?

Back

The scaled copy is twice the size of the original figure.

Front

What does it mean for two figures to be similar?

Back

Two figures are similar if they have the same shape but may differ in size. Their corresponding angles are equal, and their corresponding sides are in proportion.

Front

How do you determine if one figure is a scaled copy of another?

Back

To determine if one figure is a scaled copy of another, check if the corresponding angles are equal and the sides are in proportion.

Front

What is the scale factor from ΔABC to ΔDEF if the sides of ΔDEF are twice as long as those of ΔABC?

Back

The scale factor is 2.

Front

If the scale factor is 1/3, how does the size of the scaled copy compare to the original?

Back

The scaled copy is one-third the size of the original figure.

Front

Which side length on the scaled copy corresponds to the side length HJ on the original image?

Back

The side length AB on the scaled copy corresponds to side length HJ on the original image.

Front

Is Figure B a scaled copy of Figure A if they have the same shape but different sizes?

Back

Yes, Figure B is a scaled copy of Figure A.

Front

What happens to the area of a figure when it is scaled by a factor of 2?

Back

The area of the figure increases by a factor of 4 (2 squared).