 Deltohedron

Principal forms of the isometric system: deltohedron Dihexagonal Prism

Principal forms of the hexagonal system: dihexagonal prism Dihexagonal Pyramid

Principal forms of the hexagonal system: dihexagonal pyramid. Ditrigonal Prism

Principal forms of the hexagonal system: ditrigonal prism Dodecahedron

Principal forms of the isometric system: dodecahedron. Forms

Showing different types of forms or shapes: rectangle, right triangle, acute triangle, and obtuse triangle. Hexagonal Prism First Order

Principal forms of the hexagonal system: hexagonal prism Hexagonal Prism Second Order

Principal forms of the hexagonal system: hexagonal prism Hexagonal Pyramid First Order

Principal forms of the hexagonal system: hexagonal pyramid. Hexagonal Pyramid Second Order

Principal forms of the hexagonal system: hexagonal pyramid. Hexoctahedron

Principal forms of the isometric system: hexoctahedron. Hextetrahedron

Principal forms of the isometric system: hextetrahedron. Octahedron

Principal forms of the isometric system: octahedron. Pyritohedron

Principal forms of the isometric system: pyritohedron. Rectangular Prism

Principal forms of the isometric system: rectangular prism. Rhombohedron

Principal forms of the hexagonal system: rhomohedron. Scalenohedron

Principal forms of the hexagonal system: scalenohedron Collection of Sewer Cross-Sections

"A conduit or canal constructed, especially in a town or city, to carry off superfluous, water, soil,… Shapes

Four different types of forms or shapes: right triangle, isosceles triangle, rectangle, and circle. Tetragonal Trisoctahedron

Principal forms of the isometric system: tetragonal trisoctahedron. Tetrahedron

Principal forms of the isometric system: tetrahedron. Tetrahexahedron

Principal forms of the isometric system: tetrahexahedron. Trigonal Prism

Principal forms of the hexagonal system: trigonal prism Trigonal Trisoctahedron

Principal forms of the isometric system: trigonal trisoctahedron. Tristetrahedron

Principal forms of the isometric system: tristetrahedron.