Cuboïde

In Geometry, a cuboïde is a solid figure delimited by six rectangular faces (rectangular box). All the Angle S are right angles and the opposite faces of the cuboïde are equal. It is also a prism rectangular right . The expression of rectangular or oblong prism is ambiguous. The rectangular expression of Parallélépipède is also utilisée.
The square cuboïde , box square or premium right square (also called in an ambiguous way square prism ) is a special case of cuboïde to less the two faces are square. The Cube is a special case of square prism for which all the faces are carrées.
If dimensions of the cuboïde are has , B and C , its Volume is the product ABC and its Surface is 2 ab + 2 ac + 2 bc .
The length of large the Diagonale is $d = \ sqrt {a^2+b^2+c^2}.$
The cuboïde is a convex Polyèdre . Its six faces limit a single area of space. It has 8 tops and 12 arêtes.
The formula of Euler (the number of faces F, tops S and edges A) of a polyhedron are bound by the formula F + S = has +2 gives here 6 + 8 = 12 + 2. The forms cuboïdes are often used for the boxes, the Armoire S, the parts, the buildings, etc the cuboïdes are among the solids being able to pave a three-dimensional space. This volume is changeable and can contain many cuboïdes smaller, as one finds it in the sugar boxes, or the parts in a building.

See too

Hyperrectangle

External bonds

Cuboïde in MathWorld (by Eric W. Weisstein)
rectangular Prism and cuboïde
Simulation of a die cuboïde, research project of Oxford
Cuboïdes, prisms rectangular and cubes since Maths Is Fun

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