Dilations Practice

Front

What is dilation in geometry?

Back

Dilation is a transformation that alters the size of a figure but not its shape, using a scale factor.

Front

What is a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, the dimensions of a figure during dilation.

Front

How do you calculate the coordinates of a dilated point?

Back

To find the coordinates of a dilated point, multiply the original coordinates by the scale factor.

Front

What happens to a point when it is dilated by a scale factor greater than 1?

Back

The point moves away from the origin, resulting in an enlargement of the figure.

Front

What happens to a point when it is dilated by a scale factor less than 1?

Back

The point moves closer to the origin, resulting in a reduction of the figure.

Front

If point B is at (4, 9) and is dilated by a scale factor of 2, what are the new coordinates?

Back

B' (8, 18)

Front

If point B is at (0, 3) and is dilated by a scale factor of 1/3, what are the new coordinates?

Back

B' (0, 1)

Front

What is the image of point B (4, 9) after a dilation with a scale factor of 1/2?

Back

B' (2, 4.5)

Front

What does it mean if a dilation results in a reduction?

Back

It means the scale factor is less than 1, making the figure smaller.

Front

What does it mean if a dilation results in an enlargement?

Back

It means the scale factor is greater than 1, making the figure larger.