Geometric kite

From Freepedia

A separate article is about kite flying.

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In geometry, a kite or deltoid is a type of quadrilateral, a four-sided polygon. It has two pairs of equal sides, and the two sides in each pair are adjacent. (contrast with the parallelogram, where the sides of each pair are opposite.)

In a kite, the angles between the sides of unequal length are equal, and the diagonals are perpendicular. If the two lengths are equal, the figure is a rhombus.

A kite is also an object that opposes the force of the wind with the tension of a string held by the operator; see kite flying. The geometric term was inspired by the name of this object (itself based on kite (bird)), which in its simple form is often a quadrilateral.

The area A of the deltoid , where e and f are the lengths of the diagonals, is <math>A=\frac{ef}{2}</math>