Basic math egyptian style
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Our ancestors were NOT stupid...
See her how they worked out how to find square-roots 'long-hand' before calculators became available... http://xlinux.nist.gov/dads/HTML/squareRoot.html
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@tig said:
Our ancestors were NOT stupid...
...... then along came calculators and made many of us stupid
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See kids, this is the kind of stuff you could work out when you didn't spend all evening watching TV or playing Medal of Honor.
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What TV? There is no TV in my regular, corner pub!
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Some of the clever proofs for the original Pythagoras Theorem didn't involve 'mathematics' at all, but were done by drawing geometry, often in fine sand with pointed sticks and dividers, and using simple rearrangements of the parts around the right-angled triangle's sides to show the equivalence of the sum of the areas of the two smaller squares to the area of the largest square [i.e. not calculated at all]...
Here are just three of them...
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