# How to Calculate Triangle & Quadrilateral Side Lengths?

The law of sines and the law of cosines are trigonometric formulas relating the measures of the angles of a triangle to the lengths of its sides. They are derived from the property that larger angl...
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http://www.ehow.com/how_8311180_calculate-triangle-quadrilateral-side-lengths.html

## How to Determine if Three Side Lengths Are a Triangle?

If you have been given three side lengths, and are asked to find out if they are a triangle, don't freak out! Just use this simple formula to figure it out.

http://www.wikihow.com/Determine-if-Three-Side-Lengths-Are-a-Triangle

## How to Calculate the Side of a Right Triangle?

If you want to find the measurement of one side of a triangle, you need to know the measurements of the other two sides. Then you can use the Pythagorean Theorem to calculate the other side. The fo...
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http://www.ehow.com/how_8140434_calculate-side-right-triangle.html

## How to Calculate the Area of Triangle When One Side Is Given?

Geometry is the study of shapes and figures that take up a given space. Geometric problems try to identify the size and scope of those shapes by solving mathematic equations. In a geometry problem ...
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http://www.ehow.com/how_8464316_calculate-triangle-one-side-given.html

## How to Use Trig to Find Lengths of a Triangle?

Trigonometry is a branch of mathematics that deals with the study of triangles and their properties. Trigonometry is useful because it allows you to use algebra and manipulating numbers to determin...
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http://www.ehow.com/how_8015477_use-trig-lengths-triangle.html