Chapter 6 Vocabulary

The resulting figure after a transformation.

• Preimage

• Image

• Congruent

• Reflection

A transformation in which a figure is turned about a fixed point.

• Reflection

• Dilation

• Translation

• Rotation

The original figure before a transformation.

• Preimage

• Image

• Dilation

• Center of Rotation

A transformation that enlarges or reduces a figure by a scale factor.

• Congruent

• Rotation

• Dilation

• Translation

A transformation where a figure is flipped over a line.

• Reflection

• Rotation

• Translation

• Dilation

An operation that maps a geometric figure, preimage, onto a new figure, image.

• Translation

• Rotation

• Transformation

• Reflection

Having the same measure.

• Image

• Congruent

• Preimage

• Transformation

A transformation that slides a figure from one position to another without turning.

• Translation

• Transformation

• Reflection

• Rotation

A fixed point around which shapes move in a circular motion to a new position.

• Line of Reflection

• Rotational Symmetry

• Center of Rotation

• Angle of Rotation

The line over which a figure is reflected.

• Line of Reflection

• Center of Rotation

• Rotational Symmetry

• Angle of Rotation