Rhombus
A rhombus is a parallelogram with all sides equal in length. A rhombus with all angles equal is called a square. The word rhombus comes from the Greek word rhombos, meaning "spinning top".[1] A rhombus is sometimes called a diamond, but not all rhombi are diamond shaped. To find the perimeter of a rhombus, just add up all the sides. Also opposite sides are parallel and opposite angles are equal. Another interesting thing is that the diagonals (dashed lines in second figure) meet in the middle at a right angle.
Rhombus Media
The rhombus has a square as a special case, and is a special case of a kite and parallelogram.
A rhombus. Each angle marked with a black dot is a right angle. The height h is the perpendicular distance between any two non-adjacent sides, which equals the diameter of the circle inscribed. The diagonals of lengths p and q are the red dotted line segments.
Isohedral tiling
rhombic tiling with 30-60 rhombi
en:Rhombille tiling, all faces same color
A trigonal trapezohedron
- Rhombicdodecahedron
- Rhombictriacontahedron
Image of Rhombic icosahedron
References
- ↑ "Online Etymology Dictionary". etymonline.com. Retrieved 10 January 2011.