Circle formed by all 90° crossings of tangents of an ellipse or hyperbola
An ellipse, its minimum bounding box, and its director circle.
In geometry, the director circle of an ellipse or hyperbola (also called the orthoptic circle or Fermat–Apollonius circle) is a circle consisting of all points where two perpendicular tangent lines to the ellipse or hyperbola cross each other.
In geometry, the directorcircle of an ellipse or hyperbola (also called the orthoptic circle or Fermat–Apollonius circle) is a circle consisting of all...
of the circle and the centre is called the radius. The circle has been known since before the beginning of recorded history. Natural circles are common...
tangents lie on the circle x 2 + y 2 = a 2 + b 2 {\displaystyle x^{2}+y^{2}=a^{2}+b^{2}} . This circle is called orthoptic or directorcircle of the ellipse...
Francisco Film Critics Circle Award for Best Director is an award given by the San Francisco Film Critics Circle to honor a film director who has delivered...
Indiana Jones and the Great Circle is an upcoming action-adventure game developed by MachineGames, to be published by Bethesda Softworks. It is based on...
this circle is Leitkreis which can be translated as "Directorcircle", but that term has a different meaning in the English literature (see Director circle)...
Critics Circle Award for Best Director is an award given by the New York Film Critics Circle, honoring the finest achievements in filmmaking. 18 directors have...
Circle K Stores, Inc. is an American chain of convenience stores that is headquartered in Tempe, Arizona, and owned by Alimentation Couche-Tard, Inc.,...
A crop circle, crop formation, or corn circle is a pattern created by flattening a crop, usually a cereal. The term was first coined in the early 1980s...
1998, she was a Member of the Director'sCircle of the Mingei International Museum, and co-chair of the Director'sCircle from 1993 to 1994. From 1993...
The Workers Circle or Der Arbeter Ring (Yiddish: דער אַרבעטער־רינג), formerly The Workmen's Circle, is an American Jewish nonprofit organization that promotes...
Circle Jerks (stylized as Ciʀcle JƎʀᴋs) are an American hardcore punk band, formed in 1979 in Los Angeles, California. The group was founded by former...
Valdez, veteran actress Maricel Laxa and TV director Rowell Santiago. The kids who made it to the Magic Circle of 10 were Nash Aguas, Sharlene San Pedro...
Perfect Circle can refer to: A type of circle The Perfect Circle, a 1997 movie by Bosnian director Ademir Kenovic. Perfect Circle (novel), 2004 novel...
the 2012 Lucille Lortel Award, Outstanding Director. Gold has directed five of the plays of Annie Baker: Circle Mirror Transformation in 2009, The Aliens...
of conic section are the hyperbola, the parabola, and the ellipse; the circle is a special case of the ellipse, though it was sometimes called as a fourth...
The accompanying music video for "Circle of Life" was directed by American film composer, producer and film director Richard Baskin. It was published on...
The Florida Film Critics Circle Award for Best Director is an award given by the Florida Film Critics Circle to honor the finest directing achievementes...
in 1512. The circle was dominated by the electorate of Saxony (the circle'sdirector) and the electorate of Brandenburg. It further comprised the Saxon...
circles Directorcircle Fermat–Apollonius circle Ford circle Fuhrmann circle Generalised circle GEOS circle Great circle Great-circle distance Circle of a...
archbishop of Salzburg acted as the circle'sdirectors. The circle was made up of the following states: Imperial Circles in the 16th Century – Historical...
not enter the Circle Digital Chart, but it peaked at number 80 on the Circle Download Chart. "Super Ultra Man" did not enter the Circle Digital Chart...
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