- #1

musicgold

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- 13

- Homework Statement:
- Not a homework problem. I am curious as to how the Greek geometers drew parallel lines using only the compass and the straight age.

- Relevant Equations:
- At the 1.30 mark in the video below, Johnny Ball explains how the Greeks multiplied numbers. As far as I know the Set Square is a later invention; so the Greeks must have used something else.

Thanks