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The Lost 4-Dimensional Rotation (rhsimplex.github.io)
2 points by rhsimplex 1503 days ago
1 comments
kloch 1503 days ago
Additional dimensions also give you new ways to define angles.

  2D: axis-axis (a-a)
  3D: a-a, plane-axis (p-a)
  4D: a-a, p-a, plane-plane (p-p), volume-axis (v-a)
etc.
link