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1 окружности с внутренним касанием
Mathematics: internally tangent circlesУниверсальный русско-английский словарь > окружности с внутренним касанием
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2 Внутренне касаться
This surface is inward tangent to the sphere $S$ at the point $x$The circles internally (inwardly) tangent to the unit circleThese circles are internally tangent to the unit circleРусско-английский словарь по прикладной математике и механике > Внутренне касаться
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Tangent lines to circles — In Euclidean plane geometry, tangent lines to circles form the subject of several theorems, and play an important role in many geometrical constructions and proofs. Since the tangent line to a circle at a point P is perpendicular to the radius to … Wikipedia
Problem of Apollonius — In Euclidean plane geometry, Apollonius problem is to construct circles that are tangent to three given circles in a plane (Figure 1); two circles are tangent if they touch at a single point. Apollonius of Perga (ca. 262 BC ndash; ca. 190 BC)… … Wikipedia
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Special cases of Apollonius' problem — In Euclidean geometry, Apollonius problem is to construct all the circles that are tangent to three given circles. Limiting cases of Apollonius problem are those in which at least one of the given circles is a point or line, i.e., is a circle of… … Wikipedia
Descartes' theorem — For other uses, see Descartes theorem (disambiguation). In geometry, Descartes theorem, named after René Descartes, establishes a relationship between four kissing, or mutually tangent, circles. The theorem can be used to construct a fourth… … Wikipedia
Pappus chain — In geometry, the Pappus chain was created by Pappus of Alexandria in the 3rd century AD.ConstructionThe arbelos is defined by two circles, C U and C V, which are tangent at the point A and where C U is enclosed by C V. Let the radii of these two… … Wikipedia
Nine-point circle — The nine points In geometry, the nine point circle is a circle that can be constructed for any given triangle. It is so named because it passes through nine significant points defined from the triangle. These nine points are: The midpoint of each … Wikipedia
Nephroid — The nephroid is the red curve Half of a nephroid in coffee glass The nephroid is a plane curve whose … Wikipedia
Tusi-couple — The Tusi couple is a mathematical device in which a small circle rotates inside a larger circle twice the radius of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth… … Wikipedia
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