Unit 2 Geometry Vocabulary

Front

Rigid motions

Back

Transformations that preserve the size and shape of a figure.

Front

What is a reflection?

Back

A rigid motion that produces a mirror image of a figure.

Front

What is a rotation?

Back

A rigid motion that turns a figure around a center point.

Front

Transformation function

Back

A rule that takes an input and transforms it to produce an output.

Front

What is a pre-image?

Back

The original figure before it is transformed, the inputs.

Front

What are congruent figures?

Back

Figures that can map on top of one another after a sequence of rigid motions.

Front

What is an image?

Back

The resulting figure after it is transformed, the outputs.

Front

What is a translation?

Back

A rigid motion that shifts or moves a figure.

Front

Isometry

Back

Another name for rigid motion, which is a transformation that preserves the size and shape of a figure.

Front

What is a composite transformation?

Back

A sequence of two or more transformations performed on a pre-image.