en.wikipedia.org/wiki/Right_angle

A right angle is equal to 90 degrees. A line segment (AB) drawn so that it forms
right angles with a line (CD). In geometry and trigonometry, a right angle is an
angle that bisects the angle formed ...

www.reference.com/math/many-degrees-right-angle-c504884e507c6012

A right angle has 90 degrees. Angles are measured on a scale from 0 to 360
degrees. Right angles represent one-fourth of a full 360-degree...

www.mathsisfun.com/angles.html

Degrees (Angle) · Twitter StumbleUpon Facebook ... Angles. An angle measures
the amount of turn ... Right Angle, an angle that is 90° exactly. Obtuse Angle, an ...

www.khanacademy.org/math/basic-geo/basic-geo-angle/basic-geo-angle-types/v/acute-right-and-obtuse-angles

Acute angles measure less than 90 degrees. Right angles measure 90 degrees.
Obtuse angles measure more than 90 degrees. Learn about angles types and ...

www.coolmath.com/reference/triangles-types

Definitions and formulas for triangles including right triangles, equilateral ... The
right triangle has one 90 degree angle and two acute (< 90 degree) angles.

www.khanacademy.org/questions/how-many-degrees-are-right/kafb_7658601

Right angle is exactly 90 degrees. Straight angle is exactly 180 degrees. 5 Votes.
• Comment on this question • Flag this comment. 3 years ago by Anonymous.

www.virtualnerd.com/pre-algebra/geometry/points-lines-planes-angles/planes-angles/acute-obtuse-right-straight-angle-definition

Knowing how to identify these angles is an important part of solving many ... right
angle; right angles; straight; straight angle; straight angles; degree; degrees ...

www.geom.uiuc.edu/~demo5337/Group3/angle.html

Types of Angles. In geometry, there are three types of angles: acute angle-an
angle between 0 and 90 degrees; right angle-an 90 degree angle; obtuse ...

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

When a triangle has a right angle, it becomes a special type of triangle called a
right triangle. Right triangles always have exactly one angle that is 90 degrees.

www.mathopenref.com/triangle345.html

3:4:5 Triangle. A right triangle where the sides are in the ratio of the integers 3:4:5
... Interior Angles. Because it is a right triangle one angle is obviously 90°.