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Quadrilaterals JAN2017

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