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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
right angles | Define right angles at Dictionary.com
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Right angle - Wikipedia

en.wikipedia.org/wiki/Right_angle

In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two adjacent parts of a straight line. More precisely, if a ray is placed so ...

Right Angles - Math is Fun

www.mathsisfun.com/rightangle.html

Note the special symbol like a box in the angle. If we see this, it is a right angle. The 90° is rarely written in. If we see the box in the corner, we are being told it is ...

Definition of Right Angle - Math is Fun

www.mathsisfun.com/definitions/right-angle.html

Right Angle. more ... Right Angle. An angle which is equal to 90°, one quarter of a full revolution. © 2015 MathsIsFun.com v0.86. Right Angles · Search :: Index ...

Right Angle - math word definition - Math Open Reference

www.mathopenref.com/angleright.html

Right angles are one of the most common and interesting angles in all of geometry. It even has its own angle symbol. In the figure above, set the angle to 90° ...

Right angles in shapes (informal definition) (article) | Khan Academy

www.khanacademy.org/math/basic-geo/basic-geometry-shapes/basic-geo-quadrilaterals/a/right-angles-in-shapes

Consider the trapezoid. Let's draw a square in each corner. In which corners did the little square fit perfectly? The trapezoid has two right angles.

What is a Right Angle? - Definition & Formula - Video & Lesson ...

study.com/academy/lesson/what-is-a-right-angle-definition-formula-quiz.html

In this lesson, you will learn about the properties that identify right angles. You will also discover where right angles can be found and learn...

www.ask.com/youtube?q=Right Angles&v=9PakNIwDin4
Jan 21, 2015 ... CTC Math http://ctcmath.com/ Join with more than 217000 students now confident in math because finally they can do it! Learn at your pace, not ...

RightAngle Products - Ergonomic Office Furniture

www.raproducts.com/

RightAngle Ergonomic Products is a leading manufacturer of sit stand desks and ergonomic office furniture equipment. Products include NewHeights, R-Syle, ...