Dilations and Scale Factor

Front

What is the scale factor?

Back

The scale factor is the ratio of the length of a side of the new figure to the length of the corresponding side of the original figure.

Tags

CCSS.7.G.A.1

Front

The __________ is the ratio of a length of the new figure to the corresponding length on the original figure.

Back

scale factor

Tags

CCSS.7.G.A.1

Front

Does the image show a Dilation? If yes, did the image enlarge, reduce or none of the above?

Back

Yes, enlarge

Tags

CCSS.8.G.A.3

Front

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

Back

a reduction

Tags

CCSS.8.G.A.3

Front

A dilation produces a similar figure

Back

True

Tags

CCSS.8.G.A.3

Front

What happens to the dimensions of a figure when the scale factor is greater than 1?

Back

The figure enlarges.

Tags

CCSS.8.G.A.3

Front

What happens to the dimensions of a figure when the scale factor is equal to 1?

Back

The figure remains the same size.

Tags

CCSS.8.G.A.3

Front

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

Back

It reflects the figure across the center of dilation and may also change its size.

Tags

CCSS.8.G.A.3

Front

If a triangle has a scale factor of 1/3, what happens to its area?

Back

The area of the triangle is reduced to 1/9 of the original area.

Tags

CCSS.7.G.A.1

Front

What is the center of dilation?

Back

The fixed point in a plane about which all points are expanded or contracted.

Tags

CCSS.8.G.A.3