# How to Find the Third Angle of a Triangle?

Very often you will find you know two angles of a triangle but not the third. So what do you do if you need that third angle? Read on to find out.

http://www.wikihow.com/Find-the-Third-Angle-of-a-Triangle

## How to Find the Angle of a Right Triangle?

Right triangles are three-sided shapes containing a 90-degree angle. The unique shape of right triangles is the star in several mathematical theories, including the Pythagorean theorem. It is commo...
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http://www.ehow.com/how_8159743_angle-right-triangle.html

## How to Find Triangle Angle Measurements?

The sum of the three angles in a triangle always equals 180 degrees. The triangle may be right, isosceles, acute, obtuse, equilateral or scalene, yet the sum of all the angles is still 180 degrees....
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http://www.ehow.com/how_8154106_triangle-angle-measurements.html

## How to Find the Angle of a Triangle Using Trigonometry?

Basic geometry teaches that the sum of the angles of any triangle must equal 180 degrees, so if you know any two angles, it's a simple matter to find the third. However, the world of mathematics pr...
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http://www.ehow.com/how_8419205_angle-triangle-using-trigonometry.html

## How to Find the Base of a Right Angle Triangle?

A right triangle, which is one with a right or 90-degree angle, shares the same properties as other triangles. Its area is still one-half the product of the base and height, but instead of height b...
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http://www.ehow.com/how_8140711_base-right-angle-triangle.html