Symmetry and Mapping of Figures

The image shows what type of transformation

• Rotation

• Translation

• Reflection

The mapping, or movement, of all points of a figure in a plane according to a common operation is called a _____.

• translation

• transformation

• reflection

• rotation

A(n) ___ is a line that acts as a mirror so that corresponding points are the same distance from the mirror.

• line of reflection

• line of rotation

• line symmetry

• mapping

A transformation that creates an image that is congruent to its preimage is called a _____.

• rigid transformation

• non-rigid transformation

• dilation

• mapping

A(n) ____ is a figure before a transformation has taken place.

• pre-image

• image

• isometry

• mapping

A mapping that preserves distance while moving a figure to another location using reflections, rotations or translations.

• transformation

• rigid transformation

• non-rigid transformation

• isometry

A figure has ____ if the figure can be mapped onto itself by a reflection.

• rotational symmetry

• line symmetry

• isometry

• transformational symmetry

A figure in a plane has ____ if the figure can be mapped onto itself by a turn of 180 degrees or less.

• rotational symmetry

• line symmetry

• isometry

• transformational symmetry

A(n) ___ is a transformation of a figure that creates a mirror image.

• rotation

• reflection

• translation

• mapping

Two shapes have _____ when they are identical after a transformation.

Two parts of a shape are _____ if they are congruent reflections of each other.

• congruence; congruent

• symmetry; symmetric