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BookmarkA triangle is one of the basic shapes of geometry: a polygon with three vertices and three sides which are straight line segments.
Any three non-collinear points determine a triangle and a unique plane, i.e.
two dimensional Cartesian space in Euclidean geometry.
From the systemics perspective, triangle is the structure of every system composed with three reciprocally connected/interrelated abstract or real objects..
For more information about the topic Triangle, read the full article at Wikipedia.org, or see the following related articles:
Hypotenuse of a right triangle — The hypotenuse of a right triangle is the triangle's longest side; the side opposite the right angle. The length of the hypotenuse of a right ... > read more
Antiprism — An n-sided antiprism is a polyhedron composed of two parallel copies of some particular n-sided polygon, connected by an alternating band of ... > read more
Tessellation — A tessellation or tiling of the plane is a collection of plane figures that fill the plane with no overlaps and no gaps. One may also speak of ... > read more
Parallelogram — A parallelogram is a four-sided plane figure that has two sets of opposite parallel sides. Every parallelogram is a polygon, and more specifically a ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Triangle at Wikipedia.org. See the Wikipedia copyright page for more details.
