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### 16 Cards in this Set

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• Back
 POLYGON A closed figure with three or more straight sides VERTEX A point where sides meet. VERTICES More than one vertex TRIANGLE A polygon with 3 sides and 3 vertices QUADRILATERAL A poylgon with 4 sides and 4 vertices PENTAGON A polygon with 5 sides and 5 vertices HEXAGON A polygon with 6 sides and 6 vertices CONGRUENT FIGURES Figures that are the same size and the same shape SYMMETRY A line of symmerty is present if the figure can be folded in half and the two sides match, are congruent, and reflect each other OPEN FIGURE Has an opening in the figure, not all sides touch CLOSED FIGURE Has no opening all sides touch RIGHT ANGLE An angle that forms a straight corner ACUTE ANGLE An angle that is smaller than a right angle OBTUSE ANGLE An angle that is larger than a right angle FACE A flat surface of a solid figure EDGE The line segment formed where two faces of a solid figure meet