Solving Spans with Sticks, Strings, Sightlines & Stones &#8211

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In this excerpt from our book, “From Truths to Tools,” we show how the carpenter/geometers of antiquity used the simplest of tools – those mentioned with almost annoying alliteration in the title – to solve for an unknown distance.   

Note that the solution does not necessarily require a number as it physically reveals the length of rope or timber needed to reach the span point. Here’s the excerpt:

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