Question

the question is in the attached below. thank you for your help , Please do not answer if you are not sure or simply doing it just to get points because i will report you and your answer. Thank you

Answer 1

First answer is DE≅ EF

Second answer is DE=EF by the ''segment congruence postulate''

Third answer is DE * EF + DF by the ''segment addition postulate''

The fourth answer is DE + DE = DF

Good luck!!!