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rectangle

A four sided figure, with opposite sides the same length and the right angle corners.

symmetry

The same on both sides of a line. A mirror image

polygon

A 2-D figure with 3 or more sides that are closed.

right angle

A 90 degree angle. A corner of a notebook would fit in the angle.

parallel lines

Lines that never meet. They are always the same distance apart

triangle

A 3-sided polygon.

circle

A round figure that is NOT a polygon. It has no sides.

square

A rectangle with all side equal length and the corners are right angles.