T H E E L E M E N T S |
Book VI Proposition 22 | |
Therefore MF has the same ratio to each of the figures NH, SR; therefore NH is equal to SR. [V.9] But it [NH] is also similar and similarly situated to it [SR]; therefore GH is equal to QR. And, since, as AB to CD, so is EF to QR, while QR is equal to GH, therefore as AB is to CD, so is EF to GH. |
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