Transformation Retest Review 24

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 does it mean to reflect a shape across the y-axis?

Back

Reflecting a shape across the y-axis means flipping the shape over the y-axis, resulting in a mirror image on the opposite side.

Front

What is the effect of a 90° clockwise rotation on a point (x, y)?

Back

The new coordinates after a 90° clockwise rotation are (y, -x).

Front

What is the effect of a 90° counterclockwise rotation on a point (x, y)?

Back

The new coordinates after a 90° counterclockwise rotation are (-y, x).

Front

How do you determine the scale factor in a dilation?

Back

The scale factor is determined by the ratio of the lengths of corresponding sides of the original figure and the dilated figure.

Front

What is the result of reflecting a point (x, y) across the x-axis?

Back

The result is the point (x, -y).

Front

What is the result of rotating a point (x, y) 180° about the origin?

Back

The result is the point (-x, -y).

Front

What is a reflection in geometry?

Back

A reflection is a transformation that creates a mirror image of a shape across a line of reflection.

Front

What does it mean to rotate a shape?

Back

To rotate a shape means to turn it around a fixed point, called the center of rotation, by a certain angle.

Front

What is the difference between translation and rotation?

Back

Translation moves a shape without changing its orientation, while rotation turns a shape around a point.