**bitangent** — ● bitangent, bitangente adjectif Tangent en deux points distincts … Encyclopédie Universelle

**Bitangent** — (black) has 28 real bitangents (red).This image shows 7 of them; the others are symmetric with respect to 90° rotations through the origin.] In mathematics, a bitangent to a curve C is a line L that touches C in two distinct points P and Q and… … Wikipedia

**bitangent** — noun A line that is tangent to a curve at two points See Also: bitangential … Wiktionary

**bitangent** — bi|tan|gent Mot Agut Adjectiu invariable … Diccionari Català-Català

**bitangent** — … Useful english dictionary

**bitangente** — ● bitangent, bitangente adjectif Tangent en deux points distincts … Encyclopédie Universelle

**Malfatti circles** — In geometry, the Malfatti circles are three circles inside a given triangle such that each circle is tangent to the other two and to two sides of the triangle. They are named after Gian Francesco Malfatti, who made early studies of the problem of … Wikipedia

**Villarceau circles** — In geometry, Villarceau circles (pronEng|viːlɑrˈsoʊ) are a pair of circles produced by cutting a torus diagonally through the center at the correct angle. Given an arbitrary point on a torus, four circles can be drawn through it. One is in the… … Wikipedia

**Trott curve** — In real algebraic geometry, the Trott curve is the set of points ( x , y ) satisfying the degree four polynomial equation:displaystyle 144(x^4+y^4) 225(x^2+y^2)+350x^2y^2+81=0.These points form a nonsingular quartic plane curve that has genus… … Wikipedia

**Pseudotriangle** — In Euclidean plane geometry, a pseudotriangle is the simply connected subset of the plane that lies between any three mutually tangent convex sets. A pseudotriangulation is a partition of a region of the plane into pseudotriangles, and a pointed… … Wikipedia