plane curve segment <geometry>
plane curve <geometry>
curve in 𝔼3 that is contained in a plane
Note to entry: In a 2-dimensional coordinate system, the test for plane curve to be valid is done in the 3-dimensional space of the geometric reference surface or coordinate reference system datum.
ORIGIN: ISO/TC 211 Glossary of Terms - English (last updated: 2020-06-02)