99 points AND BRAINLIEST answer to the person who can do this for me. I WILL REPORT ANY DUMB ANSWERS! PLEASE HELP ASAP!

ΔADC ≅ ΔBCD (SAS theorem)
∠AED ≅ ∠BEC (opposite angles )
ΔAED ≅ ΔBEC (ASA congruency postulate)
Therefore DE ≅ CE (CPCTC: Corresponding Parts of a Congruent Triangle are congruent)
hope this helps