4.5 Review

Front

What is a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, a quantity. In dilation, it determines how much larger or smaller a figure becomes.

Front

What does it mean if the scale factor is greater than 1?

Back

If the scale factor is greater than 1, it indicates an enlargement of the figure.

Front

What does it mean if the scale factor is less than 1?

Back

If the scale factor is less than 1, it indicates a reduction of the figure.

Front

How do you express a dilation with a scale factor of 2 in algebraic notation?

Back

(x, y) goes to (2x, 2y).

Front

How do you express a dilation with a scale factor of 1/2 in algebraic notation?

Back

(x, y) goes to (1/2x, 1/2y).

Front

What is the scale factor if the original point (8, 12) is dilated to (2, 3)?

Back

The scale factor is 1/4.

Front

If a figure is dilated by a scale factor of 3, what happens to its dimensions?

Back

Each dimension of the figure is multiplied by 3, making it three times larger.

Front

What is the result of a dilation with a scale factor of 1?

Back

The figure remains unchanged; it retains its original size.

Front

What is the difference between enlargement and reduction in dilation?

Back

Enlargement increases the size of the figure (scale factor > 1), while reduction decreases the size (scale factor < 1).

Front

Can a dilation be both an enlargement and a reduction?

Back

No, a dilation is either an enlargement or a reduction, depending on the scale factor.