(90) Enneacontahexagon (96) Hectogon (100) 120-gon 257-gon 360-gon >100 sides Chiliagon (1,000) Myriagon (10,000) 65537-gon Apeirogon (∞) Pentagram Hexagram Heptagram Star polygons Octagram (5–12 sides) Enneagram Decagram Hendecagram Dodecagram Equilateral triangle Isosceles triangle Triangles Scalene triangle Right triangle Acute and obtuse triangles Square Rectangle Rhombus Quadrilaterals Parallelogram Trapezoid