Kite (geometry)

In Euclidean geometry, a kite is a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other. In contrast, a parallelogram also has two pairs of equal-length sides, but they are opposite to each other rather than adjacent. Kite quadrilaterals are named for the wind-blown, flying kites, which often have this shape and which are in turn named for a bird. Kites are also known as deltoids, but the word "deltoid" may also refer to a deltoid curve, an unrelated geometric object.

A kite, as defined above, may be either convex or concave, but the word "kite" is often restricted to the convex variety. A concave kite is sometimes called a "dart" or "arrowhead", and is a type of pseudotriangle.

Special cases

If all four sides of a kite have the same length (that is, if the kite is equilateral), it must be a rhombus.

If a kite is equiangular, meaning that all four of its angles are equal, then it must also be equilateral and thus a square. A kite with three equal 108° angles and one 36° angle forms the convex hull of the lute of Pythagoras.

Kite (novel)

Kite is a young adult novel about red kites by Melvin Burgess. It contains 15 chapters and was first published in 1997.

When Taylor Mase steal a red kite egg, he is not expecting it to hatch out — but it does. Taylor feels an urge to protect the fragile baby bird, which faces many hazards, including Taylor's own father, a gamekeeper.

Publishing Information

References

Kite (disambiguation)

A kite is a type of aircraft.

Kite or kites may also refer to:

Biology

Music

Film

Ships

Evil

Evil, in a general context, is the absence or opposite of that which is ascribed as being good. Often, evil is used to denote profound immorality. In certain religious contexts, evil has been described as a supernatural force. Definitions of evil vary, as does the analysis of its motives. However, elements that are commonly associated with evil involve unbalanced behavior involving expediency, selfishness, ignorance, or neglect.

In cultures with an Abrahamic religious influence, evil is usually perceived as the dualistic antagonistic opposite of good, in which good should prevail and evil should be defeated. In cultures with Buddhist spiritual influence, both good and evil are perceived as part of an antagonistic duality that itself must be overcome through achieving Śūnyatā meaning emptiness in the sense of recognition of good and evil being two opposing principles but not a reality, emptying the duality of them, and achieving a oneness.

The philosophical question of whether morality is absolute, relative, or illusory leads to questions about the nature of evil, with views falling into one of four opposed camps: moral absolutism, amoralism, moral relativism, and moral universalism.

Evil (Grinderman song)

"Evil" (often stylised as EVIL) is a song by alternative rock band Grinderman, written collectively by Nick Cave, Warren Ellis, Martyn P. Casey and Jim Sclavunos. The song was featured as the fifth track on the band's second and final studio album, Grinderman 2 (2010). On Record Store Day 2011, "Evil" was released as a limited edition single, on 12" vinyl with an enclosed CD, with various remixes.

Track listing

References

Evil (disambiguation)

Evil describes willful, immoral acts.

Evil may also refer to:

Film, book and television

Music