two dimensional curves index P-Z

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	Pancake curve Pappus chain Pappus circle first Pappus circle Parabola braked parabola cubic parabola (divergent parabola) cubic parabola (polynomial in x) divergent parabola Neile's parabola Newton's diverging parabola parabola curve parabola of Descartes parabola of Fermat parabolic catenary parabolic spiral semi-cubic(al) parabola top parabola valley parabola paracycle parallel curve parallellogram Pareto diagram limaçon of Pascal line of Pascal Pascal's triangle snail of Pascal path curve Peano curve peanut curve pear curve pear-shaped curve pear-shaped quartic pearls of de Sluze pedal negative pedal normal pedal curve pedal curve pedal triangle positive pedal pegtop penta pentacontagon pentacosagon pentadecagon pentagon regular pentagon pentagram pentakaidecagon pentamino peritrochoid perpendicular perpendicular bisector piric of Perseus perspective triangle geometric petal Piet Hein's ellipse piriform Planck distribution Planck radiation curve plane higher plane curve planar curve plane spiric curve Plateau curve Pochhammer symbol Poinsot's spiral point circle pointroulette Poisson distribution polar inverse policeman on point-duty curve polygamma function polygon circumscribed polygon control polygon curvilinear polygon cyclic polygon equiangular polygon equilateral polygon frequency polygon inscribed polygon regular polygon Reuleaux polygon simple polygon star polygon tangent polygon Thijssen polygon polygram polyline polylogarithm polynomial associated polynomial of Legendre Bernoulli polynomial Bernstein polynomial Euler polynomial Fibonacci polynomial generated polynomial Hermite polynomial Laguerre polynomial Legendre polynomial orthogonal polynomial polynomial spiral rational polynomial function recurrent polynomial Tchebyscheff polynomial Tsjebysjev polynomial polytrope power exponential curve reciprocal power exponential curve power function power series inverse prime summation prime counting function logarithmic prime approximation Neumann prime approximation Riemann prime approximation prime function prime function approximation Pritch-Atzema spiral hippopede of Proclus prolate cycloid prolate epicycloid prolate hypocycloid Nickalls-Pulfrich curve pulse function pursuit curve generalized pursuit curve straight pursuit curve biQuadratic function quadrangle quadratic curve quadratic function quadratrix quadratrix of Abdank- Abakanovicz quadratrix of Hippias quadrifolium infinite quadrifolium quadrilateral cyclic quadrilateral harmonic quadrilateral tangent quadrilateral quadridecagon quarrel curve bicircular quartic biquartic quartic egg curve Kulp's quartic quartic curve pear-shaped quartic quindecagon Radial rabbit-ear radius of curvature ranunculoid rational function entire rational function rational polynomial function reciprocal exponential function reciprocal logarithm reciprocal power exponential curve reciprocal spiral rectangle golden rectangle rectangle function rectangular Archimedes' spiral rectangular equiangular spiral rectangular curve reflecting wall curve regular enneagon regular heptagon regular octagon regular pentagon regular polygon regular tetradecagon resonance curve Reuleaux polygon Reuleaux triangle rhodonea rhodonea curve rhomb rhomb us Richards curve Riemann prime counting approximation Riemann-Siegel theta function Riemann-Siegel zeta function Riemann zeta function right equiangular spiral rising factorial roex curve roller rose four-leaved rose rosette rose of Grandi rose of Troy super rose three-leaved rose roulette Delaunay's roulette line-roulette point-roulette round curve rounded exponential curve Saint-Hilaire skating rink curve salinon salt-cellar arcs of Samothrace Saw-tooth curve scarabaeus Schoch line Schoch's circle S-curve secant arc hyperbolic secant arc secant cosecant exsecant hyperbolic secant sectrix of Maclaurin semicircle semi cubic(al) parabola septadecagon serpentine cubic serpentine curve Cayley's sextic sextic curve shell curve Dürer's shell curve shoemaker's knife Riemann-Siegel theta function Riemann-Siegel zeta function Sierpinski carpet Sierpinski gasket Sierpinski sponge Sierpinski square Sierpinski triangle Sierpinski triangle curve Sierpinski (universal plane) curve sigmoidal curve sign function signum function siluroid simple curve simple polygon Simson line sinc function sine arc sine cardinal sine function catastrophic sine cohacoversine coversine coversed sine equalized sine hacoversine hacoversedsine haversine haversed sine hyperbolicsine hyperbolicsine integral sinegenerated curve sine integral sine summation versine versed sine sinusoid sinusoidal spiral circleskating rink curve Saint-Hilaire skating rink curve conchoid of de Sluze pearls of Sluze snail curve snail of Pascal Koch snowflake space-filling curve special function Spence's integral spherical Bessel function of the first kind spherical function spider curve spider lines spiral Archimedean spiral Archimedes' spiral A.R.E.A. spiral Atzema spiral Bernoulli spiral Cotes' spiral cubic spiral equiangular spiral epi spiral Euler's spiral Fermat's spiral Fibonacci spiral golden spiral growth spiral hyperbolic spiral line spiral logarithmic spiral parabolic spiral Poinsot's spiral polynomial spiral Pritch-Atzema spiral reciprocal spiral sinusoidal spiral spiral of Archimedes spiral of Cornu spiral of Fermat spiral of Theodore of Cyrene super spiral transition spiral spira mirabilis spiric of Perseus plane spiric curve spiric section spirographic curve Menger sponge Sierpinski sponge square Cantor square fractal Sierpinski square staircase function stamp of Truchet star Christmas star star figure Jews' star Koch star line star Mercedes star n-pointed star star polygon regular star regular star curve stargenerated curve star of Goliath star of Lakshmi stauroid Steiner's hypocycloid Steiner ellipse step function unit step function Stirling curve straight line streamline strong nuclear force curve strophoid Freeth's strophoid (general) strophoid oblique strophoid right strophoid super circle super ellipse generalized super ellipse super rose super spiral swan-like curve swastika swastika curve left-handed swastika right-handed swastika symmedian mount Tagaki Tagaki curve Talbot 's curve arc cotangent- arc tangent cotangent hyperbolic tangent tangent (of a curve) tangent (trigonometric) tangent polygon tautochrone Tchebyscheff polynomial teardrop curve tetracontagon tetracosagon tetracuspid tetradecagon regular tetradecagon tetragon tetrakaidecagon spiral of Theodore of Cyrene Riemann-Siegel theta function Thijssen polygon three-dimensional curve three-leaved clover three-leaved rose torpedo curve tractory (curve) tractrix generalized tractrix Lerch transcendent transcendental curve transition curve transition spiral trapezium isosceles trapezium trapezium curve trapezoid trefoil (cubic) trefoil (quartic) triacontagon triacontakaidigon triacontakaihenagon triangle acute-angled triangle acute triangle characteristic triangle circle triangle circular triangle curvilinear triangle equilateral triangle first Brocard's triangle isosceles triangle obtuse-angled triangle obtuse triangle Pascal's triangle pedal triangle perspective triangle regular triangle Reuleaux triangle right-angled triangle right isosceles triangle right triangle second Brocard's triangle Sierpinski triangle Sierpinski triangle curve special right triangle triangle curve tricircular algebraic curve tricosagon tricuspoid tridecagon trident trident of Descartes trident of Newton trifolium regular trifolium trigon Legendre trigonometric trigonometric function triskaidecagon trisector trisectrix Ceva's trisectrix trisectrix of Delange (limaçon) trisectrix trisectrix of Catalan trisectrix of Longchamps trisectrix of Maclaurin trochoid epitrochoid Trott curve rose de Troy stamp of Truchet Tschirnhausen's cubic Tsjebysjev polynomial Tusi couple twin circle of Archimedes two-dimensional curve Undecagon unidecagon unit circle unit step function unity circle Menger universal curve Sierpinski universal plane curve Valve curve van der Waerden curve vapor pressure curve vélaire vercosine versed cosine versed sine versiera versine vesica pisces vesica piscis viscera pisces viscera piscis vortex Villarceau circle van der Waerden curve reflecting Wall curve Wassenaar egg curve Wassenaar curve Watt's curve Weber function Weibull curve window function witch of Agnesi windmill curve Woo circle Zeta function generalized zeta function generalized Riemann zeta function Hurwitz zeta function Riemann-Siegel zeta function zigzag curve
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