Chapter 9 Thorems/ Collaries/ Postulates
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Translation Theorem | A translation is an isometry
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| Reflection Theorem | A reflection is an isometry
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| Composition Theorem | A rotation is an isometry
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| 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
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| 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
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Created by:
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