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8/14/2010

How does a rectangular trapezoid look?

A rectangular trapezoid (also called right-angled trapezoid, right trapezoid) has such kind:

Rectangular trapezoid. Right trapezoid. Mathematics for blondes.
Rectangular trapezoid

A rectangular trapezoid always has two right angles. On a picture direct corners are marked little squares in tops A and D. Direct corners can be situated in two any contiguous tops of trapezoid.

Rectangular trapezoid. Right trapezoid. Mathematics for blondes.
Rectangular trapezoid

On this picture of rectangular trapezoid direct corners are located in tops B and С.

In mathematics there is determination of rectangular trapezoid, which over is brought and in Wikipedia: the rectangular is name a trapezoid at which even one corner of line. This classic determination of rectangular trapezoid, bluntly rewritten from sacred mathematical books. In Euclidean geometry a rectangular trapezoid always has two lines of corner, as two sides trapezoids, called grounds, are parallel. Segment BC, formative a direct corner with founding of АВ, will be always perpendicular to the second founding of CD. With one or three direct corners there can be only a curvilinear rectangular trapezoid, and it is quite another other class of geometrical figures already.

For blondes helped to draw kria, author of blog kria-tiv.

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