noncollinear

/ˌnɑnkəˈlɪniər/
adjective
  1. Not lying on the same straight line; used to describe points or objects that do not line up in a single straight line.
    • In geometry class, we learned that any three noncollinear points can form a triangle.
    • To create a stable tripod, the legs should be placed at noncollinear positions on the ground.
    • The surveyor marked three noncollinear points on the map to outline the property boundary.
Antonyms