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# Math 2 Transformatio

### Vocabulary for Chapter 9 Common Core Math II

TermDefinition
Line of Symmetry a line or fold in the image where the two halves match exactly
Reflection a transformation representing a flip of a figure
Isometry when the figure does not change size after a transformation. The preimage and image are congruent. All sides and angle measures are preserved.
Rotation a transformation that turns every point of the preimage through a specified angle and direction about a fixed point called the center of rotation
Transformation maps an initial figure called a preimage onto a final figure called an image (translation, rotation,reflection)
Translation a transformation that moves all points of a figure the same distance in the same direction.
Line of Reflection a shared line of symmetry between the preimage and image
Angle of Rotation Determined by angle formed at center of rotation to a point on the preimage and the corresponding point on the image
Created by: martha.kelley