Geometry Transformations and Concepts

Front

Reflection

Back

A line moves every point on a figure to a point directly on the opposite side of the line. The new point is the same distance from the line as it was in the original figure.

Front

Rotation

Back

Moves every point on a figure around a center by a given angle in a specific direction.

Front

Transformation

Back

An action or rule for moving or changing figures on a plane. Includes translations, reflections, rotations, and dilations.

Front

Translation

Back

Moves every point in a figure a given distance in a given direction.

Front

Clockwise

Back

In the same direction as the hands of a clock; to the right (of a turn).

Front

Counterclockwise

Back

In the opposite direction as the hands of a clock; to the left (of a turn).

Front

Sequence of Transformations

Back

A set of translations, rotations, reflections, and dilations on a figure performed in a given order.

Front

Correspond

Back

Means to match. When part of an original figure matches up with part of a copy. These could be points, segments, angles, or distances.

Front

Image

Back

A new figure that is created after a transformation of an original figure. Every part of the original figure moves in the same way to match up with a part of the new figure.

Front

Pre-Image

Back

The name of a figure before any transformations are performed.