triangle
parallelogram
hexagon
quadrilateral
rectangle
pentagon
rhombus
trapezoid
square
four 90 degree angles opposite sides are equal and parallel
A 2D figure with 4 straight sides, with one pair of parallel sides
A figure with five sides and five angles
four 90 degree angles opposite sides are parallel all sides are equal lengths
A figure with four sides whose opposite sides are parallel and equal
any closed, four-sided 2D figure
A figure with 6 sides and 6 angles
A 3-sided figure Angles may be acute, right, or obtuse
A figure with 4 equal sides, opposite sides parallel and opposite angles parallel
