Scale factor and dilations

Front

What is the definition of dilations in mathematical terms?

Back

To make larger or smaller.

Front

If the scale factor is greater than one, the new figure will be:

Back

An enlargement.

Front

Which of the following algebraic representations represents a dilation that is an enlargement?

Back

(x, y) goes to (kx, ky) where k > 1.

Front

How do you write the algebraic notation when the scale factor is 3?

Back

(x, y) goes to (3x, 3y).

Front

A dilation produces a similar figure: True or False?

Back

True.

Front

What is a scale factor?

Back

A number that scales, or multiplies, a quantity.

Front

If the scale factor is less than one, the new figure will be:

Back

A reduction.

Front

What happens to the dimensions of a figure when a dilation is applied?

Back

The dimensions are multiplied by the scale factor.

Front

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

Back

The figure remains unchanged.

Front

How do you determine if two figures are similar?

Back

If one can be obtained from the other by a dilation.