# What Is a Left Angle?

A left angle is a type of construction angle bracket support tool consisting of a simple rigid 'L' frame and supported corner. The tool is fixed on vertical surfaces or vertical meeting points in order to support a shelf or other weight.
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 A left angle triangle is at the left side of the triangle. I HATE WIKI ANSWERS. http://wiki.answers.com/Q/What_is_left_angle_trian...
 There is no such thing as a left angle. A right angle measures 90 degrees. An http://www.chacha.com/question/what-is-the-definit...
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 Try (In this case opp = 4, adj = 3) (atn(opp/adj)*180) / 3.141 http://www.experts-exchange.com/Q_21654493.htm
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a left angle is the opposite from a right angle : ...
The reason a right angle is not called a left angle is due to the old Latin term angulus rectus, which means upright. This word refers to the vertical perpendicular ...
To calculate an angle you must first know if it is a right angle, left angle. Then you would take the measurements and add them together to get your figure. ...