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In [[geometry]], circumference is the distance around a closed curve; for example, a [[ci [[Category:Geometry]] ...

|bgcolor=#e7dcc3|[[Edge (geometry)|Edge]]s and [[Vertex (geometry)|vertices]]||20 In [[geometry]], an '''icosagon''' is a twenty-sided [[polygon]]. The sum of any icosagon ...

[[File:Geometry Rectangle.svg|thumb|A rectangle]] A rectangle with all four sides equal in length is called a [[square (geometry)|square]]. ...

In [[geometry]], the '''diameter''' of a [[circle]] is a line from one side directly to t [[Category:Geometry]] ...

In [[geometry]], the '''radius''' of a [[circle]] or [[sphere]] is the shortest connectio [[Category:Geometry]] ...

...sdate=10 January 2011}}</ref> [[Rectangle]]s, [[rhombus]]es, and [[Square (geometry)|squares]] are all parallelograms. ...ef>Owen Byer, Felix Lazebnik and Deirdre Smeltzer, ''Methods for Euclidean Geometry'', Mathematical Association of America, 2010, pp. 51-52.</ref><ref>Zalman U ...

It is calculated by taking the number of [[Point (geometry)|points]] in the shape, the number of [[line]]s in the shape, and the numbe |[[Hexahedron]] or [[cube (geometry)|cube]] ...

...parameter family of [[parallel]] lines. A cylinder whose [[Cross section (geometry)|cross section]] is an [[ellipse]], [[parabola]], or [[hyperbola]] is call ...Even more general is the '''generalized cylinder''': the [[Cross section (geometry)|cross-section]] can be any curve. ...

== Division by zero in geometry == ...<math>\textstyle \frac{1}{0} = \infty.</math> This infinity ([[Projective geometry|projective]] infinity) is neither a positive or a negative number, the same ...

...actly what that connection is; for some, trigonometry is just a section of geometry. ...a side or three sides are known. These laws are useful in all branches of geometry, since ''every [[polygon]] may be described as a combination of triangles'' ...

In [[differential geometry]], there exists a certain type of mathematical [[Plane (mathematics)|plane] ...this explanation is the fact that [[Euclidean geometry]] is not the actual geometry of space, but an approximation which works well at the level of human life. ...

...of the [[angle]]s of a [[right triangle]] is always equal to 90 [[degree (geometry)|degrees]]. This angle is the [[right angle]]. The two sides next to the ri The Pythagorean theorem says that the [[area]] of a [[square (geometry)|square]] on the hypotenuse is equal to the [[sum]] of the areas of the squ ...

...ch is defined as a shape with four sides, which has one set of [[parallel (geometry)|parallel]] sides. In North America, they call a trapezium as an [[irregula ...

[[Category:Geometry]] ...

[[Category:Geometry]] ...

...fter [[Albert Einstein]] and [[David Hilbert]]. The basic idea is to use [[geometry]] to model the effects of gravity. The usual form of the equations is that ...

...er branches of mathematics (e.g. [[differential equations]] and [[analytic geometry]]). It can also be applied to the real world in areas such as [[engineering ...

...[[Geometry]] || [[Trigonometry]] || [[Differential geometry]] || [[Fractal geometry]] ...[Fundamental theorem of arithmetic]] – [[Fundamental theorem of projective geometry]] – [[classification theorems of surfaces]] – [[Gauss-Bonnet theorem]] – [[ ...

...one]] is dissected by a [[Plane (mathematics)|plane]] which is [[Parallel (geometry)|parallel]] to one of the [[surface]]s of the cone, the result is a parabol ...

...ube || [[hypercube]]<BR>(n-cube) || {4,3,3} || 16 || 32 || 24<br>[[Square (geometry)|square]]s || 8<br>[[cube]]s || [[tetrahedra]] || 16-cell || ''B''<sub>4</s *[[H. S. M. Coxeter]], ''Introduction to Geometry, 2nd ed.'', John Wiley & Sons Inc., 1969. ISBN 0-471-50458-0. ...