Geometry
CW Rigid Transformations
Name _______________________
Date _____________ Per _______
Vocabulary
Rigid Transformations
Translation
Preimage
Image
Reflection
Rotation
1. ___________________________ A transformation in which every point of the preimage is moved the
same distance in the same direction.
2. ___________________________ A transformation in which every point of the preimage is moved across
a line known as the mirror line so that the mirror is the perpendicular bisector of the segment containing
the point and its image.
3. ___________________________A transformation in which every point of the preimage is moved by the
same angle through a circle centered at a given fixed point known as the center of rotation.
4. ___________________________A transformation that does not change the size or shape of the figure.
5. ___________________________A shape that undergoes a motion or transformation.
6. ___________________________ A shape that results from a transformation of a figure known as the
preimage.
C
Translations
1. Trace the object and the line onto tracing paper.
2. Apply pencil lead to back of the shape on your tracing paper.
3. Return tracing paper so the original side up and slide
traced image along line m.
4. Transfer image to new location by drawing over traced
preimage.
5. Label the image using the prime notation to name the
vertices.
B
D
m
A
E
C
Rotations
1. Trace the object and the point onto tracing paper.
2. Apply pencil lead to back of the shape on your tracing paper.
3. Return tracing paper so the original side up and then rotate
preimage about P.
4. Transfer image to new location by drawing over traced
preimage.
5. Label the image using the prime notation to name the vertices.
B
D
A
E
P

C
Reflections
1. Trace the object and the line onto tracing paper.
2. Flip tracing paper over and align the traced line onto line l exactly.
3. Transfer image to new location by drawing over traced preimage.
4. Label the image using the prime notation to name the vertices.
B
D
A
E
l