Respuesta :

Answer:

Step-by-step explanation:

1. DE = DF (Def of midpoint)

2. EB = EB (Reflexive)

3. <DEB is congruent to <FEB

3. EB is a transversal- alternate interior angles are congruent

4. SAS

4. SAS theorem states that two triangles are equal if two sides and the angle between those two sides are equal.