[231.] THEOR. VIII. PROP. XII.
[232.] THEOR. IX. PROP. XIII.
[233.] THEOR. X. PROP. XIV.
[234.] THEOR. XI. PROP. XV.
[235.] LEMMA V. PROP. XVI.
[236.] COROLL.
[237.] THEOR. XII. PROP. XVII.
[238.] THEOR. XIII. PROP. XVIII.
[239.] THEOR. XIV. PROP. XIX.
[240.] PROBL. I. PROP. XX.
[241.] MONITVM.
[242.] THEOR. XV. PROP. XXI.
[243.] PROBL. II. PROP. XXII.
[244.] PROBL. III. PROP. XXIII.
[245.] MONITVM.
[246.] THEOR. XVI. PROP. XXIV.
[247.] THEOR. XVII. PROP. XXV.
[248.] COROLL.
[249.] THEOR. XIIX. PROP. XXVI.
[250.] COROLL. I.
[251.] COROLL. II.
[252.] SCHOLIVM.
[253.] LEMMA VI. PROP. XXVII.
[254.] LEMMA VII. PROP. XXVIII.
[255.] LEMMA VIII. PROP. XXIX.
[256.] THEOR. XIX. PROP. XXX.
[257.] SCHOLIVM.
[258.] COROLL.
[259.] LEMMA IX. PROP. XXXI.
[260.] THEOR. XX. PROP. XXXII