Axis

From TheBestLinks.com

Axis has several uses:

• In mathematics, an axis is a straight line around which a geometric figure can be rotated. An axis of symmetry is a line with respect to which a body can be symmetrical. The term is also applied for the axis of a graph; the horizontal axis x-axis, the vertical y-axis and the z-axis is a possible third axis used for three-dimensional graphing.

• In anatomy, the axis (C2) is the second cervical vertebra of the spine. Its articulation with the bone above, the atlas, allows rotation, and its articulation with the bone below (C3) allows a lesser degree of flexion, tilting and rotation.

• In politics, Axis (often capitalized) can also be used to denote an alliance or partnership between states. A historical example are the Axis Powers during World War II who where fought by the Allies. In 2002 George W. Bush popularized the controversial term Axis of Evil.

da:Akse de:Achse eo:Akso es:Eje fr:Axe sl:os vrtenja sv:Axelmakterna

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