Rigid Transformations Vocabulary

Front

____________________________ are sides that have the same relative positions in geometric figures.

Back

corresponding sides

Front

Angles that have the same relative positions in geometric figures.

Back

corresponding angles

Front

A ______ is a flat surface. It has infinite length and width, but no depth. A ______ extends infinitely in all directions in two dimensions. ______s are determined by three points, but are usually named using one uppercase letter.

Back

plane

Front

A ______ is the mapping, or movement, of a plane and all the points of a figure on a plane according to a common action or operation. Examples: Translations, reflections, rotations, and dilations are examples of _______s.

Back

transformation

Front

The original figure in a transformation is called the

Back

pre-image

Front

The new figure created from a transformation is called the __________.

Back

image

Front

A _______ is a rigid motion transformation that “slides” each point of a figure the same distance and direction.

Back

translation

Front

A ___________ is a line that acts as a mirror so that corresponding points are the same distance from the line.

Back

line of reflection

Front

A ________ is a rigid motion transformation that turns a figure on a plane about a fixed point, called the center of _____, through a given angle, called the angle of _____.

Back

rotation

Front

The _________ is the point around which a figure is rotated. The _________ can be a point on the figure, inside the figure, or outside the figure.

Back

center of rotation