|Book II Proposition 8|
the four areas AG, MQ, QL, RF are quadruple of AG
the four areas CK, KD, GR, RN are quadruple of CK
the eight areas, which contain the gnomon STU, are quadruple of AK.
AK is the rectangle AB, BD, for BK is equal to BD, therefore
four times the rectangle AB, BD is quadruple of AK;
four times the rectangle AB, BD is equal to the gnomon STU.
|Previous Page Return to Propositions Next Page|