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A closed figure formed by three or more line segments that intersect only at their endpoints.
A figure can be rotated less than 360 degrees around a central point and coincide with the original figure.
A repeating pattern of plane figures that completely cover a plane with no gaps or overlaps.
Triangle Sum Theorem
The theorem that states that the measures of the angles in a trianlge add up to 180 degrees.
Angles formed by a transversal cutting through 2 or more lines that are in the same relative position.
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