16. Linyang panggilid

a. extension line
b. border line
c. invisible line
d. section line
e. break line

17. Linyang pamutol

a. extension line
b. border line
c. invisible line
d. section line
e. break line

18. Linyang pasudlong

a. extension line
b. border line
c. invisible line
d. section line
e. break line

19. Linyang pang di-nakikita

a. extension line
b. border line
c. invisible line
d. section line
e. break line

20. Linyang pambahagi

a. extension line
b. border line
c. invisible line
d. section line
e. break line