cube

hexagon a shape with six straight sides.

cardioid A heart-like form, is a plane curve traced by a point on the perimeter of a circle that...

square a flat shape with four sides of equal length and four angles of 90°

hendecagon undecagon, endecagon, or 11-gon is an eleven-sided polygon. A regular hendecagon has internal angles of 147.27 degrees...

star polygon is a type of non-convex polygon. A regular star pentagon, {5/2}, has five corner vertices and intersecting...

icosagon or 20-gon, is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

pentagram pentalpha, pentangle or star pentagon, is the shape of a five-pointed star drawn with five straight strokes...

annulus or little ring, is a ring-shaped object, a region bounded by two concentric circles…   annulus →