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### 15 Cards in this Set

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• Back
 octagon a polygon having eight sides parallelogram a quadrilateral that has both pairs of opposite sides congruent and parallel pentagon a polygon with five sides perpendicular two line segments are perpendicular if they meet at right angles polygon a simple closed figure in a plane formed by three or more line segments quadrilateral a polygon with four sides rectangle a quadrilateral with opposite sides congruent and parallel all all angles are at a right angle regular polygon a polygon having all sides congruent and all angles congruent rhombus a parallelogram with all sides congruent right angle an angle that measures 90 degrees rotational geometry a figure that can be turned or rotated less than 360 degrees about a fixed point so that the figure looks exactly as it did before being turned is said to have rotational symmetry scalene triangle a triangle in which no sides are congruent side a ray that is part of an angle similar figures figures that have the same shape but different sizes square a parallelogram with all sides congruent all angles right angles and opposite sides parallel