Archimedean solid

Octahedron is any solid, three-dimensional figure with eight faces. It is a type of polyhedron (solid figure with many faces). The faces of an… See more » Area, in plane geometry, is the amount of surface contained within the boundaries of a plane figure. It is generally expressed in square units. For… See more » Diameter, in geometry, is the length of any straight line segment that passes through the center of a circle or a sphere and touches the figure's… See more »