noncollinear       
adjective  mathematics specialized (also non-collinear) uk/ˌnɒn.kɒlˈɪn.i.ər/ us/ˌnɑːn.kəˈlɪn.i.ɚ/ /ˌnɑːn.koʊˈlɪn.i.ɚ/
 非共线的
Noncollinear points do not lie on a single straight line.
  The points on the diagram are noncollinear. 图上的点是非共线的。 
 We were studying some problems in non-collinear geometry.
  - More examples
 - Stage 2 is arranged in a noncollinear configuration.
 - The experiment involved transitions between symmetrical, noncollinear patterns.
 - The appearance of noncollinear gradients is not clear.