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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 ...

## Types of Angles

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 ...

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

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.

## Degrees as a unit of angle measure - Math Open Reference

www.mathopenref.com/degrees.html

Discussion of the way angles are measured in degrees, minutes, seconds. ... There are 400 grads in a circle and so a right angle is 100 grads. You will rarely ...

## IXL - Angles of 90, 180, 270, and 360 degrees (4th grade math ...

Fun math practice! Improve your skills with free problems in 'Angles of 90, 180, 270, and 360 degrees' and thousands of other practice lessons.

## Measuring and Making Angles - For Dummies

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

The most common measure of an angle is in degrees. Here is a brief ... The right angle is one of the most easily recognizable angles. It's in the form of the letter L ...

## 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.

## 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 ...

Sep 9, 2013 ... IF I have it right, if we are lining up our base on the Zero side of ... to see if the angle is acute, right or obtuse so that the degree number then ...

### Degrees (Angles) - Math is Fun

www.mathsisfun.com

We can measure Angles in Degrees. There are 360 degrees in one Full Rotation (one complete circle around). (Angles can ... circle is 90° (called a Right Angle) ...