en Reuleaux

Reuleaux may refer to:

Franz Reuleaux (1829–1905), German mechanical engineer and lecturer
in geometry:
- Reuleaux polygon, a curve of constant width
  - Reuleaux triangle, a Reuleaux polygon with three sides
  - Reuleaux heptagon, a Reuleaux polygon with seven sides that provides the shape of some currency coins
- Reuleaux tetrahedron, the intersection of four spheres of equal radius centered at the vertices of a regular tetrahedron

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