[11.] LEMME I.

[12.] Demonstr ation.

[13.] Corollaire.

[14.] LEMME II.

[15.] Demonstration.

[16.] Corollaire I.

[17.] Corollaire II.

[18.] LEMME III.

[19.] Demonstration.

[20.] Corollaire I.

[21.] Corollaire II.

[22.] Corollaire III.

[23.] LEMME IV.

[24.] Demonstration.

[25.] Corollaire I.

[26.] Corollaire II.

[27.] Corollaire III.

[28.] LEMME V.

[29.] Demonstration.

[30.] PROPOSITION FONDAMENTALE DES POIDS SUSPENDUS AVEC DES CORDES

[31.] Demonstration.

[32.] Corollaire I.

[33.] Corollaire II.

[34.] Corollaire III.

[35.] Corollaire IV.

[36.] Crollaire V.

[37.] Corollaire VI.

[38.] Corollaire VII.

[39.] Corollaire VIII.

[40.] Corollaire IX.