A rational (area) being subtracted from a medial (area) , two other irrational (straight lines) arise (as the square root of the remaining area) - either a first apotome of a medial (straight line), or that (straight line) which with a rational (area) makes a medial whole. * For let the rational (area) $BD$ have been subtracted from the medial (area) $BC$. * I say that one of two irrational (straight lines) arise (as) the square root of the remaining (area), $EC$ - either a first apotome of a medial (straight line), or that (straight line) which with a rational (area) makes a medial whole.
(not yet contributed)
Proofs: 1