The symbol ~ is used to represent similarity.
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Noncongruent figures may have the same shape but not the same size.
The number of lines of symmetry of a regular polygon is equal to the number of sides of the polygon.
A line of symmetry divides a figure into two congruent parts, each of which is the mirror image of the other. Lines of symmetry are not limited to horizontal and vertical lines.
The student will determine congruence of segments, angles, and polygons.