Review 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 enlarge or reduce figures in geometry.

Front

If a figure is multiplied by a scale factor of 1/4, what happens to its perimeter?

Back

The perimeter will be 1/4 the original perimeter.

Front

How does the area of a figure change when the scale factor is 2?

Back

The area is multiplied by 4.

Front

What is the relationship between scale factor and area?

Back

If the scale factor is 'k', the area is multiplied by 'k^2'.

Front

If the scale factor is 5, how many times larger will the area of the larger square be compared to the smaller square?

Back

The area will be 25 times larger.

Front

What is the formula for the area of a rectangle?

Back

Area = base × height.

Front

If a rectangle has a base of 4 ft and a height of 5 ft, what is its area?

Back

Area = 4 ft × 5 ft = 20 square feet.

Front

What happens to the area of a triangle if the scale factor is 3?

Back

The area is multiplied by 9.

Front

What is the effect of a scale factor of 1 on a figure?

Back

The figure remains the same size.

Front

If a triangle has an area of 24 square units, what will be its area if the scale factor is 1/2?

Back

The area will be 6 square units.