Answer:
B and C
Step-by-step explanation:
A) There is no line between E and D, so that can't be the name of an angle.
B) Angle ACB is all connected and is an obtuse angle.
C) Angle FCB is all connected even though you have to go through point E. If you start outward going in then technically it can be seen as E being a point on line F. However, if the answer was angle ECB that would also be correct.
D) Angle DEB has no connecting lines.
