T H E E L E M E N T S |
Book II Proposition 8 | |
Since the four areas AG, MQ, QL, RF are quadruple of AG and the four areas CK, KD, GR, RN are quadruple of CK therefore the eight areas, which contain the gnomon STU, are quadruple of AK. Now, since AK is the rectangle AB, BD, for BK is equal to BD, therefore four times the rectangle AB, BD is quadruple of AK; therefore four times the rectangle AB, BD is equal to the gnomon STU. |
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