See also
Ball, Closed Disk, Disk Covering Problem, Disk Line Picking, Disk Point Picking, Five Disks Problem, Hypersphere, Lower Half-Disk, Mergelyan's Theorem, Open Disk, Polydisk, Sphere, Unit Disk, Upper Half-Disk
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Cite this as:
Weisstein, Eric W. "Disk." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Disk.html