4 lines extend from point E. A horizontal line extends to the left to point A and a vertical line extends up to point C. Another line extends halfway between the other 2 lines to point B. Lines A E and E C form a right angle. Given that ∠CEA is a right angle and Ray E B bisects ∠CEA, which statement must be true? ∠BEA ≅ ∠CEA ∠CEB ≅ ∠CEA m∠CEB = 45° m∠CEA = 45°