A cuboid.
A two-dimensional shape with three sides is a triangle. A three-dimensional shape with three faces is a cylinder.
a polyhedron * * * * * That is only if it is bounded by plane faces. A sphere, for example, is a three dimensional shape but is not a polyhedron: it is a solid shape.
There is none you idiot
A cube.
decahedron
sphere
A double helix
triacontahedron
Another name for a triangular prism is a "triangular box." This term is often used informally to describe the three-dimensional geometric shape that has two triangular bases and three rectangular lateral faces. The shape is commonly encountered in various fields, including mathematics and design.
Hexagon
A shape that has 10 sides (two dimensional) is called a decagon. A shape that has 10 faces (three dimensional) is call a decahedron.
A three-dimensional octagon is commonly referred to as an "octagonal prism." This geometric shape consists of two parallel octagonal bases connected by rectangular faces. The octagonal prism retains the properties of an octagon while extending into the third dimension.