H4Y4P3O1C3Y4C3L1O1I1D2S1
28 points
HYPOCYCLOIDS is validvalid
HYPOCYCLOID,
HYPOCYCLOID, a curve generated by a point on the circumference of a circle which rolls on the inside of another circle
HYPOCYCLOID,
HYPOCYCLOID, a curve generated by a point on the circumference of a circle which rolls on the inside of another circle