Assertion: rotation's plane | /r/HasProperty | invariant
Facets:
Source sentences:
text: Beware: not all planes through O are invariant under isoclinic rotations; only planes that are spanned by a half-line and the corresponding displaced half-line are invariant.
text: In 4D space, every rotation about the origin has two invariant planes which are completely orthogonal to each other and intersect at the origin, and are rotated by two independent angles ξ 1 and ξ 2 .