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The "hypotenuse" firstly is the longest side of a triangle. This is where the perpendicular sides are joined together by a longer diagonal side. Now, to work out what the length of an hypotenuse, it is essential to know what "Pythagoras Theorem". This is the equation that A squared plus B squared equals C squared where A and B are any side on the triangle other than the hypotenuse and C is the hypotenuse. To square a number, you just have to times it by itself, so if we square 10, it would be 10X10 which is a hundred. After you square A and B, you simply add them both together.

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Q: How can one determine what the length of the hypotenuse is?
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