Transformations Review

Front

What is a dilation in transformations?

Back

A dilation is either an enlargement or a reduction of a figure.

Front

What mathematical process is used in a translation?

Back

Addition or subtraction is used in a translation.

Front

What is the image of the point (5,5) after a 180-degree counterclockwise rotation around the origin?

Back

The image is (-5,-5).

Front

What is the image of the point (-5,8) after a 90-degree clockwise rotation around the origin?

Back

The image is (8,5).

Front

Does the image show a Dilation?

Back

Yes.

Front

What is a translation in geometry?

Back

A translation is a transformation that moves every point of a figure the same distance in the same direction.

Front

What is the effect of a reflection over the x-axis on the point (a,b)?

Back

The image will be (a,-b).

Front

What is the effect of a reflection over the y-axis on the point (a,b)?

Back

The image will be (-a,b).

Front

What is the center of dilation?

Back

The center of dilation is a fixed point in the plane about which all points are expanded or contracted.

Front

What happens to the coordinates of a point during a 90-degree counterclockwise rotation?

Back

The coordinates (x,y) become (-y,x).