The correct option is A If seg AB≅seg CD and seg CD≅seg EF, then seg AB≅seg EF
The following are the properties of congruent segments:
(i) Reflexivity: seg AB≅seg AB
(ii) Symmetry: If seg AB≅seg CD, then seg CD≅seg AB
(iii) Transitivity: If seg AB≅seg CD and seg CD≅seg EF, then seg AB≅seg EF