Hypercycle (hyperbolic geometry)
（重定向自Equidistant curve）
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![The tritetragonal tiling, in a Poincaré disk model, can be seen with edge sequences that follow hypercycles.](/Images/godic/202501/11/Uniform_tiling_433-t0_edgecenter5203.png")
In hyperbolic geometry, a hypercycle, hypercircle or equidistant curve is a curve whose points have the same orthogonal distance from a given straight line (its axis).
Given a straight line L and a point P not on L, one can construct a hypercycle by taking all points Q on the same side of L as P, with perpendicular distance to L equal to that of P.