# How to Find Out if a Triangle Can Have Certain Lengths?

A triangle is a figure with three straight sides. Triangles come in such a variety of shapes and sizes, it might seem that the lengths of the sides of a triangle can be any combination at all. This...
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http://www.ehow.com/how_8452327_out-triangle-can-certain-lengths.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

## How to Find the Lengths of a Right-Sided Triangle?

You can easily calculate the sides of a right triangle using the Pythagorean theorem. This theorem states that "a" squared plus "b" squared equals "c" squared, where "c" is the hypotenuse of the tr...
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http://www.ehow.com/how_8187262_lengths-rightsided-triangle.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 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