1. Unit 2 Vocabulary

2. Line of Reflection- A line that is equidistant to each point corresponding point on the pre- image and image Rigid Motion- A transformation that preserves shape and size (congruent figures) Line Symmetry- 2D a line drawn through an image where each side is a reflection of the other Rotational symmetry- 2D when an image can be rotated less than 360 degrees and map onto itself. Composition of transformations- The final image after 2 or more transformations.

3. Axis symmetry- 3D when a figure can be rotated less than 360 degrees and map onto itself. Translation vector- The rule used to slide a figure Order of symmetry- The number of times a figure can map onto itself. Angle of rotation- The angle a pre image is rotated to map onto an image Plane symmetry- 3D a plane drawn through a figure where each side is a reflection of the other

4. Magnitude of symmetry- The smallest angle a figure can be rotated to map onto itself Center of rotation- A fixed point that a figure rotates around