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 the proportional relationship between two similar figures.

Front

If a scale factor is less than one, what happens to the size of the figure?

Back

The figure will be reduced in size.

Front

What is the formula to find the area of a square?

Back

Area = side length × side length.

Front

If a square has a side length of 25 feet, what is its area in square feet?

Back

625 square feet.

Front

How do you convert feet to inches?

Back

Multiply the number of feet by 12.

Front

If the scale is 2 inches = 5 feet, how many inches represent 25 feet?

Back

10 inches.

Front

What is the area of a scale drawing of a square garden with a side length of 10 inches?

Back

100 in².

Front

How do you find the actual distance using a map scale?

Back

Multiply the distance on the map by the scale factor.

Front

If the scale on a map is 2 inches = 40 miles, what is the actual distance for 4.125 inches?

Back

82.5 miles.

Front

What does it mean for two triangles to be similar?

Back

Two triangles are similar if their corresponding angles are equal and their sides are in proportion.