It is also thought that she also assisted her father in producing a new version of Euclid 's Elements which has become the basis for all later editions of Euclid . Heath writes of Theon and Hypatia's edition of the Elements:
Ito rin ay nag-akala na siya ring assisted kanyang ama sa paggawa ng isang bagong bersyon ng Euclid' s Sangkap na kung saan ay naging batayan para sa lahat ng mga edisyon ng mamaya Euclid. Heath magsusulat ng Theon at Hypatia's edition ng Sangkap: