Identify dilations

Front

What is a dilation in geometry?

Back

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

Front

What happens when the scale factor of a dilation is greater than 1?

Back

The dilation is an enlargement.

Front

What happens when the scale factor of a dilation is less than 1?

Back

The dilation is a reduction.

Front

If a shape is dilated by a scale factor of 2, what happens to its size?

Back

The shape doubles in size.

Front

If a shape is dilated by a scale factor of 1/2, what happens to its size?

Back

The shape is reduced to half its original size.

Front

How do you determine the scale factor of a dilation?

Back

The scale factor is determined by comparing the lengths of corresponding sides of the original and dilated figures.

Front

What is the scale factor if the original length is 8 and the new length is 2?

Back

The scale factor is 1/4.

Front

What is the scale factor if the original length is 5 and the new length is 10?

Back

The scale factor is 2.

Front

If a point (x, y) is dilated by a scale factor of k, what is the new point?

Back

The new point is (kx, ky).

Front

What is the effect of a dilation on angles?

Back

Dilation does not change the measures of angles; they remain the same.