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Chapter 9 - Geo.

Chapter 9 Thorems/ Collaries/ Postulates

Translation Theorem A translation is an isometry
Reflection Theorem A reflection is an isometry
Composition Theorem A rotation is an isometry
Reflections in Parallel Lines If lines k and m are parallel, then a reflection in line k followed by a reflection in line m is the same as a translation; If P" is the image of P, then:(1) line PP' is perpendicular to k and m, and (2)line PP"=2d where d is the distance between k and m
Reflections inn Intersecting Lines If lines k and m intersect at point P, then a reflection in k followed by a reflection in m is the same as a rotation about point P; the angle of rotation is 2x degrees, where x degrees is the measure of the acute or right angle formed by k and m
Created by: kgatling