Parallelogram
Parallelogram A parallelogram. A parallelogram is a four-sided plane figure that ... two sets of opposite parallel sides. Every parallelogram is a polygon, and more specifically a quadrilateral. Special cases of a parallelogram are the rhombus, in which all ...
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Triangle
... relative lengths of their sides: In an equilateral triangle all sides are of equal length. An equilateral triangle is also equiangular, i.e. all ... equal sides meets the third side). An equilateral triangle is actually also an isosceles triangle, but not all isosceles triangles are equilateral triangleshttp://mathworld.wolfram.com/IsoscelesTriangle ... http://mathworld.wolfram.com/ScaleneTriangle.html Equilateral Isosceles Scalene Triangles can also be ...
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Rhomboid
... Rhomboids In geometry, a rhomboid is a parallelogram in which adjacent sides are of unequal ... a rhomboid with sides of equal length (equilateral) is a rhombus. A shape like a ... used in the 19th century for a parallelogram which was neither a rectangle nor a ... faces in which each face is a parallelogram and opposite faces in pairs lie in ... a square is that which is both equilateral and right-angled; an oblong that ...
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Dictionary of the terms of elementary mathematics   (translated from Russian)
... matyu&.gt; by external (internal) means the equilateral triangles of &.lt;.matyu&.gt;.ABCh_y&.lt ... is equal to the area of the parallelogram, stretched to these vectors. In connection with ... parallel. Rectangle By rectangle is called the parallelogram, whose all angles straight lines. % R Rhomb ... pravil'nye triangles, then their centers form equilateral triangle. - let us note that a difference ... of triangles, obtained during the construction of equilateral triangles by external and internal means, ...
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User:Mathbot/Recent log
... Sleep for 10 seconds Doing ......................................... dealing with Equilateral.wiki Now in /m1/aoleg/wp/articles/E removed `Equilateral.wiki' Fetching Equilateral.wiki. Attempt: 1. Sleeping for 2 seconds U Equilateral.wiki Now in /m1/aoleg/wp/articles ... Sleep for 10 seconds Doing ......................................... dealing with Parallelogram.wiki Now in /m1/aoleg/wp/ ...
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Polygon   (translated from French)
... it is regular. Examples and counterexamples : triangle equilateral is a regular polygon. square is a ... of axis-mirror than on sides; the parallelogram is not isosceles (except if it acts ... order 3; it is then regular, thus equilateral; any quadrilateral rotosymetric is centrosymetric; the simplest ... counterexamples : the only triangle équiangle is the equilateral triangle; the convex quadrilaterals équiangles are the ... the regular polygons are équiangles. Other classifications Equilateral polygon A polygon is known as ...
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Even crystallographic group   (translated from German)
... cells in minimum translation cell P1 O1 Parallelogram 1 p2 2222 Parallelogram 2 pm ** Rectangle 2 pg XX Rectangle ... Square 8 p3 333 Lozenge from two equilateral triangles 3 p3m1 * 333 Lozenge from two equilateral triangles 6 equilateral triangles p31m 3*3 Lozenge from ...
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Square   (translated from German)
... Square with (at least) two parallel sides. Parallelogram: Square, with ever two each other opposite ... in the diagram, for example: Square? Rectangle? Parallelogram? Trapezoid? Konvexes_Viereck Square = rectangle? Lozenge Square = kite ... square? equal-leg trapezoid Rectangle = chord square? Parallelogram Lozenge = kite square? Trapezoid Lozenge = tangent square? Parallelogram Gleichschenkliges_Trapez = chord square? Trapezoid Classification The even ... symmetry axes: Square zweizaehlige symmetry (point symmetrical): Parallelogram vierzaehlige symmetry: Square after the length ...
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List of geometric shapes
... cyclic polygon decagon dodecagon enneagon equiangular polygon equilateral polygon hendecagon heptagon hexagon Lemoine hexagon Tucker ... pentacle, pentagram triangle acute triangle anticomplementary triangle equilateral triangle excentral triangle , tritangent triangle isosceles triangle ... isosceles right triangle scalene triangle Reuleaux triangle parallelogram equilateral parallelogram: rhombus Lozenge rhomboid Wittenbauer's parallelogram ...
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Lattice (group)
... special cases are: a hexagonal lattice or equilateral triangular lattice (p6m) a square lattice (see ... five cases correspond to the triangle being equilateral, right isosceles, right, isosceles, and scalene. In ... pair. Each pair a, b defines a parallelogram, all with the same area, the magnitude of the cross product. One parallelogram fully defines the whole object. Without further symmetry, this parallelogram is a fundamental domain. The vectors ...
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