Lesson 1 - 3 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 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 3, what does that mean?

Back

It means that the dimensions of the larger figure are 3 times the dimensions of the smaller figure.

Front

What is the scale factor from the small fry to the large fry if the answer is 3?

Back

The scale factor is 3, meaning the large fry is 3 times larger than the small fry.

Front

What is the scale factor from ΔABC to ΔDEF if the answer is 2?

Back

The scale factor is 2, meaning each side of ΔDEF is 2 times the length of the corresponding side of ΔABC.

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 the side length HJ on the original image.

Front

What is the scale factor from the smaller quadrilateral to the larger if the answer is scale factor = 4?

Back

The scale factor is 4, meaning the larger quadrilateral is 4 times larger than the smaller quadrilateral.

Front

Is Figure B a scaled copy of Figure A if the answer is Yes?

Back

Yes, Figure B is a scaled copy of Figure A, meaning it maintains the same shape but is a different size.

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 can you determine if two figures are scaled copies of each other?

Back

You can determine if two figures are scaled copies by checking if their corresponding angles are equal and their corresponding side lengths are in proportion.