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# What is Pythagoras Theorem?

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Last updated 26 October 2012 15:30 by NZTecAdmin

Pythagoras theorem is particularly useful in construction since verticals are usually at an angle of 90◦ to the ground (plumb). “Rise over run” problems occur in contexts like calculating the lengths of roofing rafters, the area of seal on a sloping roadway, and travel distances on a co-ordinate grid (though GPS now makes that redundant).

Pythagoras theorem is “For any right angled triangle the sum of the squares of the two shortest side lengths equals the square of the longest side length.” The most frequently referred to example is a 3:4:5 triangle.

In a 3:4:5 triangle 32 + 42 = 52.

19 May 2017 21:04
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