List of geometric shapes

Generally composed of straight line segments

• polygon
• concave polygon
• constructible polygon
• convex polygon
• cyclic polygon
• decagon
• digon
• dodecagon
• nonagon
• equiangular polygon
• equilateral polygon
• henagon
• hendecagon
• heptagon
• hexadecagon
• hexagon
• Lemoine hexagon
• icosagon
• swastika
• octagon
• pentagon
• regular polygon
• regular decagon
• regular octagon
• regular pentagon
• star without crossing lines
• star polygon
• decagram
• octagram
• star of Lakshmi (octagram)
• heptagram
• star of David, hexagram
• pentagram
• triangle
• acute triangle
• anticomplementary triangle
• equilateral triangle
• excentral triangle
• isosceles triangle
• medial triangle
• obtuse triangle
• rational triangle
• right triangle
• 30-60-90 triangle
• isosceles right triangle
• Kepler triangle
• scalene triangle
• Reuleaux triangle
• parallelogram
• equilateral parallelogram: rhombus
• Lozenge
• rhomboid
• Penrose tile
• rectangle
• rhombus
• square
• trapezium
• isosceles trapezium
• quadrilateral
• cyclic quadrilateral, tetrachord
• kite
• tangential quadrilateral
• trapezoid
• isosceles trapezoid
• polydrafter

Curved

• annulus
• arbelos
• circle
• disc
• Archimedes' twin circles
• Bankoff circle
• circumcircle
• excircle
• incircle
• nine-point circle
• circular sector
• circular segment
• crescent
• ellipse
• various lemniscates
• lune
• oval
• Reuleaux polygon
• rotor
• lens, vesica piscis (fish bladder)
• Reuleaux triangle
• rounded rectangle
• semicircle
• sphere
• stadium
• tomoe, magatama
• triquetra
• Yin-Yang

Not composed of circular arcs

• Archimedean spiral
• astroid, paracycle, cubocycloid
• deltoid
• ellipse
• smoothed octagon
• super ellipse
• tomahawk

See also

• List of curves
• List of triangle topics
• List of circle topics
• List of geometric surfaces
• Cuisenaire rods
• Unicode Geometric Shapes