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en.wikipedia.org/wiki/Right_angle

In geometry and trigonometry, a

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Note the special symbol like a box in the angle. If we see this, it is a

www.khanacademy.org/math/cc-third-grade-math/cc-third-grade-measurement/cc-third-grade-geometry/a/right-angles-in-shapes

Identify

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Definition of an

www.khanacademy.org/math/geometry/hs-geo-foundations/hs-geo-angles/v/acute-right-and-obtuse-angles

Acute angles measure less than 90 degrees.

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Fun math practice! Improve your skills with free problems in 'Angles greater than,
less than, or equal to a

mathworld.wolfram.com/RightAngle.html

A triangle containing a

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In this lesson, you will learn about the properties that identify

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These are not

Answers

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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