# What Is a Right Angle?

A right angle is an angle that is exactly 90 degrees. When an angle is 90 degrees, one leg of the angle is perfectly horizontal, and the other is perfectly vertical. It is the best angle for creating stable structures. You can find more information here: http://www.mathsisfun.com/rightangle.html
right angle
NOUN
1.
the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one quarter of the circle; the angle formed by two perpendicular lines that intersect; an angle of 90°.
Source: Dictionary.com
A right angle is an angle that is exactly 90 degrees. A square and a rectangle are shapes made with right angles. A right triangle has one angle that is 90 degrees.
Q&A Related to "What Is a Right Angle"
 A right angle is an angle that measures exactly 90 degrees. Angles under 90 are called acute and angles greater then 90 are called obtuse. Easiest way to think about a right angle http://answers.ask.com/Science/Mathematics/what_is...
 1. Loosen the screws so the piece can be inserted. This will either be one or two handles to loosen depending on the design of the clamp. 2. Insert the right angle into the clamp http://www.ehow.com/how_10002844_clamp-right-angle...
 1 Know the 6 trig ratios. You need to memorize the following: sine abbreviated as sin opposite/hypotenuse cosine abbreviated as cos adjacent/hypotenuse tangent abbreviated as tan http://www.wikihow.com/Use-Right-Angled-Trigonomet...
 The square drawn in a right angle simply is to indicate that the angle is, indeed, 90 degrees. http://wiki.answers.com/Q/What_is_a_square_in_a_ri...
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A right angle is an angle formed by two perpendicular lines that meet at exactly 90 degrees. As a result, this 90 degree formation is what makes a right angle. ...
A right angle is an angle formed by two perpendicular lines that meet at exactly 90 degrees. As a result, this 90 degree formation is what makes a right angle. ...