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## Right angle

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 ...

## Angles - Acute, Obtuse, Straight and Right - Math is Fun

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 ...

## Cool math .com - Types of Triangles

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.

## Types of angles - Basic mathematics

www.basic-mathematics.com/types-of-angles.html

An angle whose measure is bigger than 90 degrees but less than 180 degrees. ... angle 2 are complementary angles because together they form a right angle.

## Right Angle - math word definition - Math Open Reference

www.mathopenref.com/angleright.html

Definition of an right angle (one whose measure is exactly 90 degrees).

## Measuring and Making Angles - For Dummies

www.dummies.com/how-to/content/measuring-and-making-angles.html

The right angle is one of the most easily recognizable angles. It's in the form of ... It has a measure of more than 90 degrees but less than 180 degrees. Figure 5: ...

## Types of Angles: Right, Straight, Acute & Obtuse | Study.com

Angles are everywhere. Learn about the different types of angles we use in mathematics, including right angles, acute angles, obtuse angles, and...

## Types of Angles - Free Math Help

www.freemathhelp.com/angles.html

Acute angles have a measure less than 90 degress, right angles have a measure of exactly 90 degrees, and obtuse angles are greater than 90 degrees.

## Trigonometry/Angles of a triangle sum to 180 Degrees - Wikibooks ...

en.wikibooks.org/wiki/Trigonometry/Angles_of_a_triangle_sum_to_180_Degrees

This is a particularly special isosceles triangle because it is isosceles and it is a right triangle. There is one angle of 90 degrees and each of the two remaining ...

## Relations and sizes - Right triangle facts - In Depth - Math.com

www.math.com/school/subject3/lessons/S3U3L4DP.html

A right triangle has one angle equal to 90 degrees. A right triangle can also be an isosceles triangle--which means that it has two sides that are equal. A right ...

### What are Acute, Obtuse, Right, and Straight Angles? | Virtual Nerd

www.virtualnerd.com

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