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Construction of the limaçon r = 2 + cos(π – θ) with polar coordinates' origin at (x, y) = ( 1 / 2 , 0). In geometry, a limaçon or limacon / ˈ l ɪ m ə s ɒ n /, also known as a limaçon of Pascal or Pascal's Snail, is defined as a roulette curve formed by the path of a point fixed to a circle when that circle rolls around the outside of a circle of equal radius.
The limaçon trisectrix specified as the polar equation = (+ ), where a > 0. When a < 0, the resulting curve is the reflection of this curve with respect to the line = / As a function, r has a period of 2π. The inner and outer loops of the curve intersect at the pole.
In geometry, a trisectrix is a curve which can be used to trisect an arbitrary angle with ruler and compass and this curve as an additional tool. Such a method falls outside those allowed by compass and straightedge constructions, so they do not contradict the well known theorem which states that an arbitrary angle cannot be trisected with that type of construction.
Quartic Plane Curve: Rational Curves: Degree 2: Conic Section(s) Unit Circle: Unit Hyperbola: Degree 3: Folium of Descartes: Cissoid of Diocles: Conchoid of de Sluze: Right Strophoid: Semicubical Parabola: Serpentine Curve: Trident Curve: Trisectrix of Maclaurin: Tschirnhausen Cubic: Witch of Agnesi: Degree 4: Ampersand Curve: Bean Curve ...
Circle — negative pedal curve of a limaçon. In geometry, a negative pedal curve is a plane curve that can be constructed from another plane curve C and a fixed point P on that curve. For each point X ≠ P on the curve C, the negative pedal curve has a tangent that passes through X and is perpendicular to line XP.
Curve (red) with two chords (black), intersecting in the equichordal point. In geometry, an equichordal point is a point defined relative to a convex plane curve such that all chords passing through the point are equal in length. Two common figures with equichordal points are the circle and the limaçon. It is impossible for a curve to have ...
The curves were generated from the polar coordinates equation r=b+sin(aθ), which is a slight generalization of the Limaçon and Rose/rhodonea curves, using parameters a=(2/3) and b=2. The same curve (with a different rotation about the origin) is generated by the following non-polar parametric equations:
Contract curve; Cost curve; Demand curve. Aggregate demand curve; Compensated demand curve; Duck curve; Engel curve; Hubbert curve; Indifference curve; J curve; Kuznets curve; Laffer curve; Lorenz curve; Phillips curve; Supply curve. Aggregate supply curve; Backward bending supply curve of labor