Unit 3: Transformations Vocabulary

A function that moves or changes a figure in some way to produce a new figure

• Transformation

• Translation

• Rotation

• Reflection

The angle that is formed by rays drawn from the center of rotation to a point and its image

• Angle of Rotation

• Angle of Reflection

• Angle of Incidence

• Angle of Elevation

The combination of two or more transformations to form a single transformation

• Transformation Sequence

• Transformation Combination

• Composition of Transformations

• Transformation Fusion

A line that acts as a mirror for a reflection

• Line of Reflection

• Line of Symmetry

• Line of Projection

• Line of Intersection

A figure that results from the transformation of a geometric figure

• Image

• Shape

• Form

• Outline

A figure has rotational symmetry when the figure can be mapped onto itself by a rotation of 180 degrees or less about the center of the figure.

• Rotational Symmetry

• Reflective Symmetry

• Translational Symmetry

• Skew Symmetry

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

• Translation

• Reflection

• Rotation

• Dilation

The fixed point in a rotation

• Center of Rotation

• Axis of Symmetry

• Point of Reflection

• Line of Rotation

The original figure before a transformation

• Preimage

• Image

• Transformation

• Reflection

A line of reflection that maps a figure onto itself

• Line of Symmetry

• Line of Reflection

• Line of Asymmetry

• Line of Division