polygons Crossword

a four-sided figure.
four-sided plane rectilinear figure with opposite sides parallel.
a plane figure with four equal straight sides and four right angles.
a plane figure with four straight sides and four right angles, especially one with unequal adjacent sides, in contrast to a square.
a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides.
a quadrilateral with only one pair of parallel sides
a plane figure with at least three straight sides and angles, and typically five or more.
having an outline or surface curved like the exterior of a circle or sphere
having an outline or surface that curves inward like the interior of a circle or sphere.
When two lines are crossed by another line
when all angles are equal and all sides are equal
adds up to 180 degrees
is a convex quadrilateral with a line of symmetry bisecting one pair of opposite sides.
a line segment joining two vertices of a polygon, when those vertices are not on the same edge
to divide into two equal parts