m∠GEF and m∠FEM are linear pair.
So, m∠GEF + m∠FEM = 180
+ m∠FEM =

m∠FEM =
-

=

m∠GEF and m∠MEH are vertically opposite angles.
Therefore, m∠GEF = m∠MEH
m∠GEF =

m∠HEG and m∠FEM are vertically opposite angles.
Therefore, m∠HEG = m∠FEM
m∠HEG =

Similarly, the other angles can be found. Please refer to the attached table.