isoptic curve

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• Isoptic — In the geometry of curves, an isoptic is the set of points for which two tangents of a given curve meet at a given angle. The orthoptic is the isoptic whose given angle is a right angle. Without an invertible Gauss map, an explicit general form… …   Wikipedia

• List of curves — This is a list of curves, by Wikipedia page. See also list of curve topics, list of surfaces, Riemann surface. Algebraic curves*Cubic plane curve *Quartic plane curve *Quintic plane curve *Sextic plane curveRational curves*Ampersand curve… …   Wikipedia

• Hypocycloid — In geometry, a hypocycloid is a special plane curve generated by the trace of a fixed point on a small circle that rolls within a larger circle. It is comparable to the cycloid but instead of the circle rolling along a line, it rolls within a… …   Wikipedia

• List of mathematics articles (I) — NOTOC Ia IA automorphism ICER Icosagon Icosahedral 120 cell Icosahedral prism Icosahedral symmetry Icosahedron Icosian Calculus Icosian game Icosidodecadodecahedron Icosidodecahedron Icositetrachoric honeycomb Icositruncated dodecadodecahedron… …   Wikipedia

• Sinusoidal spiral — In geometry, the sinusoidal spirals are a family of curves defined by the equation in polar coordinates:r^n = a^n cos(n heta),where a is a nonzero constant and n is a rational number other than 0. With a rotation about the origin, this can also… …   Wikipedia

• Orthoptic — Orthopic may refer to: Orthoptic, the set of points for which two tangents of a given curve meet at a right angle, a type of isoptic. A form of eye exercise designed to correct vision Orthoptics, the diagnosis and treatment of defective eye… …   Wikipedia