Right angle

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A right angle

A right angle is an angle with a measurement of 90 degrees. When two lines cross each other so that all the angles have the same size, the result is four right angles. The top of the letter T is at right angles to the vertical line. Walls of buildings are usually at right angles to the floor. Two things that are at right angles are called "perpendicular".

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Category: Geometry

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• This page was last modified 09:35, 12 March 2007 by Wikipedia user Creol. Based on work by Wikipedia user(s) CommonsDelinker, Escarbot, TBC, Adam Newbold, Jusjih, Dar1435, Gauss and Niteowlneils and Anonymous user(s) of the Simple English Wikipedia.
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