Prop. XXXV. Theor. XI.
*Iisdem positis, dico quod area figuræ*DES*, radio indefinito*SD*descripta, æqualis sit areæ quam corpus, radio dimidium lateris recti figuræ*DES*æquante, circa centrum*S*uniformiter gyrando, eodem tempore describere potest.*
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Sec. VII.
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