Unit 2 Transformations Review

Front

What is a dilation in geometry?

Back

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

Front

Does a dilation produce a congruent figure?

Back

No, a dilation does not produce a congruent figure; it produces a similar figure.

Front

What is a translation in geometry?

Back

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

Front

What is a reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is a rotation in geometry?

Back

A transformation that turns a figure around a fixed point at a certain angle.

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 image and the distance from the center of dilation to the corresponding point on the original figure.

Front

If the point (8, 12) is dilated to (2, 3), what is the scale factor?

Back

1/4.

Front

What transformation is represented by the rule (x, y) -> (x + 3, y - 2)?

Back

Translation.

Front

What does it mean for a figure to be congruent?

Back

Two figures are congruent if they have the same shape and size.

Front

What is the difference between a rotation and a reflection?

Back

A rotation turns a figure around a point, while a reflection flips it over a line.