Transformations/Dilations

Front

What is a dilation in geometry?

Back

A transformation that produces a figure similar to the original but larger or smaller by a scale factor.

Tags

CCSS.8.G.A.3

Front

True or False: A dilation produces a congruent figure.

Back

False

Tags

CCSS.8.G.A.3

Front

What is the algebraic notation for a dilation with a scale factor of 3?

Back

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

Tags

CCSS.8.G.A.3

Front

If a point A(2, 3) is dilated by a scale factor of 2, what are the new coordinates?

Back

A'(4, 6)

Tags

CCSS.8.G.A.3

Front

What is the scale factor in a dilation?

Back

The ratio of the distance from the center of dilation to a point on the original figure and the distance from the center of dilation to the corresponding point on the dilated figure.

Tags

CCSS.8.G.A.3

Front

How do you determine the coordinates of a dilated figure?

Back

Multiply the original coordinates by the scale factor.

Tags

CCSS.8.G.A.3

Front

What happens to the shape of a figure during a dilation?

Back

The shape remains the same, but the size changes.

Tags

CCSS.8.G.A.3

Front

What is the center of dilation?

Back

The fixed point in a dilation from which all points are expanded or contracted.

Tags

CCSS.8.G.A.3

Front

If triangle B is rotated 90° clockwise, what transformation is applied?

Back

Rotation.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is the effect of a scale factor less than 1 in a dilation?

Back

The figure shrinks.

Tags

CCSS.8.G.A.3