If there are two straight lines then as the first is to the second, so the (square) on the first (is) to the (rectangle contained) by the two straight lines. * Let $FE$ and $EG$ be two straight lines. * I say that as $FE$ is to $EG$, so the (square) on $FE$ (is) to the (rectangle contained) by $FE$ and $EG$.
(not yet contributed)
Proofs: 1
Proofs: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16