Respuesta :

Hey There!

The answer is going to be the answer is

mEFC=253°


To find the answer you must find the value of mEF  which is

mEF,mFEC,mDC,mED


You subtract each of them  and you should get 73.


Then  add 180 and your final choice should be 253

Answer:

253

Step-by-step explanation: