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Students know the definition of reflection and perform reflections across a line using a transparency.
Students show that reflections share some of the same fundamental properties with translations (e.g., lines map to lines, angle and distance preserving motion, etc.). Students know that reflections map parallel lines to parallel lines.
Teacher and Student versions of full lesson from engageNY
Students know that for the reflection across a line L, then every point P, not on L, L is the bisector of the segment joining P to its reflected image P'.
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