Hypotenuse square?

Question:Why does good construction roofers use a hypotenuse square?

Answers:
you are talking about pythagoras theorem
it just happens that a right angle square with one
side 3' and the other 4' will have a long side of 5'
it's an easy formula to remember when you want to square
up a frame.

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hi
to find the slope of the roof
like 3/12,4/12,/6/12, 8/12 and so on

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