Polygons

a two-dimensional closed shape with straight sides and equal angles between adjacent sides, and all sides have the same length

a polygon that does not have all sides or angles equal in size or measure, making it non-regular and lacking symmetry

a geometric shape that has all its interior angles measuring less than 180 degrees, causing the polygon to curve outward

a geometric shape that has at least one angle measuring greater than 180 degrees, causing the polygon to curve inward

(geometry) a flat figure with four straight sides and four angles

a geometric shape with five angles and five straight sides

The flag of the city had a pentagon in the center, symbolizing the five founders.

(geometry) a closed shape with six straight sides and six angles

She decided to tile her bathroom floor with hexagon-shaped tiles.

a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles

My young daughter proudly showed me the colorful heptagon she had cut out for her geometry homework assignment.

(geometry) a polygon consisting of eight straight sides and eight angles

The stop sign is shaped like an octagon.

(geometry) a flat shape consisting of nine straight sides and nine angles

(geometry) a flat polygon with ten straight sides and ten angles

Architects sometimes incorporate shapes like the decagon into their designs for a unique appearance.

(geometry) a flat figure consisting of eleven straight sides and eleven angles

(geometry) a flat figure that consists of twelve sides and twelve angles

a polygon with fourteen sides and fourteen angles

a polygon with thirteen sides and thirteen angles

a polygon with fifteen sides and fifteen angles

a polygon with sixteen sides and sixteen angles

a polygon with seventeen sides and seventeen angles

a polygon with eighteen sides and eighteen angles

a polygon with nineteen sides and nineteen angles

a polygon with twenty sides and twenty angles

a five-pointed star

He wore a necklace with a pentagram pendant.

(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon

a three-sided geometric shape

The pyramid is a trilateral with a triangular base.