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The circle is a highly symmetric shape: every line through the centre forms a line of reflection symmetry, and it has rotational symmetry around the centre for every angle. Its symmetry group is the orthogonal group O(2,R). The group of rotations alone is the circle group T. All circles are similar. [12] A circle circumference and radius are ...
A navigational box that can be placed at the bottom of articles. Template parameters [Edit template data] Parameter Description Type Status State state The initial visibility of the navbox Suggested values collapsed expanded autocollapse String suggested Template transclusions Transclusion maintenance Check completeness of transclusions The above documentation is transcluded from Template ...
The following other wikis use this file: Usage on ar.wikipedia.org دائرة; Usage on ba.wikipedia.org Әйләнә; Usage on bo.wikipedia.org སྒོར་ཐིག་
To change this template's initial visibility, the |state= parameter may be used: {{A Perfect Circle | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{A Perfect Circle | state = expanded}} will show the template expanded, i.e. fully visible.
An excircle or escribed circle [2] of the triangle is a circle lying outside the triangle, tangent to one of its sides, and tangent to the extensions of the other two. Every triangle has three distinct excircles, each tangent to one of the triangle's sides.
A geometry template is a piece of clear plastic with cut-out shapes for use in mathematics and other subjects in primary school through secondary school. It also has various measurements on its sides to be used like a ruler .
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The director circle of a hyperbola has radius , and so, may not exist in the Euclidean plane, but could be a circle with imaginary radius in the complex plane. The director circle of a circle is a concentric circle having radius 2 {\textstyle {\sqrt {2}}} times the radius of the original circle.