- orbiform curve
- мат.кривая постоянной ширины
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Curve of constant width — A Reuleaux triangle is a curve of constant width. The sides of the square are supporting lines: each touches the curve but does not intersect the interior. The Reuleaux triangle can be rotated whilst always touching each side of the square in a… … Wikipedia