Dilations: identify

Front

What is a dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What is an enlargement in dilation?

Back

A dilation where the scale factor is greater than 1, making the figure larger.

Front

What is a reduction in dilation?

Back

A dilation where the scale factor is less than 1, making the figure smaller.

Front

What does a scale factor (SF) of 1 indicate?

Back

The figure remains the same size; it is neither enlarged nor reduced.

Front

If a shape is dilated with a scale factor of 2, what type of dilation is it?

Back

Enlargement.

Front

If a shape is dilated with a scale factor of 0.5, what type of dilation is it?

Back

Reduction.

Front

How do you determine if a dilation is an enlargement or reduction?

Back

By comparing the scale factor to 1; if SF > 1, it's an enlargement; if SF < 1, it's a reduction.

Front

What is the scale factor if a shape is reduced to half its size?

Back

SF = 1/2.

Front

What is the scale factor if a shape is enlarged to twice its size?

Back

SF = 2.

Front

If a blue shape is dilated to a yellow shape, and the yellow shape is larger, what type of dilation is it?

Back

Enlargement.