[301.] PROPOSITION II. Probleme.
[302.] PROPOSITION III. Probleme.
[303.] PROPOSITION IV. Théoreme.
[304.] DÉMONSTRATION.
[305.] PROPOSITION V. Théoreme.
[306.] Demonstration.
[307.] PROPOSITION VI. Theoreme.
[308.] Demonstration.
[309.] PROPOSITION VII. Theoreme.
[310.] Demonstration.
[311.] PROPOSITION VIII. Theoreme.
[312.] Demonstration.
[313.] Définitions.
[314.] I.
[315.] II.
[316.] PROPOSITION IX. Theoreme.
[317.] Demonstration.
[318.] PROPOSITION X. Theoreme.
[319.] Demonstration.
[320.] PROPOSITION XI. Probleme.
[321.] Solution.
[322.] PROPOSITION XII. Probleme.
[323.] Solution.
[324.] Demonstration.
[325.] Corollaire.
[326.] Fin du troiſieme Livre.
[327.] NOUVEAU COURS DE MATHÉMATIQUE. LIVRE QUATRIEME, Qui traite des propriétés des Triangles & des Parallelo-grammes. Définitions.
[328.] PROPOSITION I. Theoreme.
[329.] Demonstration.
[330.] Corollaire I.