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Quadrilaterals JAN2017

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Across
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A polygon that contains an angle greater than 180º, and at least one of the diagonals lies partially, or entirely, outside of the figure. Appears to have a "dent" in it.
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two congruent sides
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quadrilateral with at least one pair of parallel sides
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all angles congruent
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quadrilateral with two pairs of opposite sides parallel
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angle that is exactly 90 degrees
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segment joining two non-consecutive vertices of a polygon
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segments or angles or that are of equal length or measure
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four-sided polygon
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parallelogram with all four sides congruent
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Polygon in which all diagonals lie in interior of the figure.
Down
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coplanar lines/segments that do not intersect
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quadrilateral with two pairs of adjacent sides congruent and no opposite sides congruent
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parallelogram with four right angles
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pairs of angles that sum to 180 degrees
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forming right angles
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all sides congruent
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equilateral and equiangular
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parallelogram with four right angles and four congruent sides