Question 3 of 40Erica is given the diagram below and asked to prove that AB 1DF . Whatwould be the missing step of the proof?Given: Point B is the midpoint of FF, and point A is the midpoint of EDProve: AB I| DF

Statements Reasons 1. Point B is the midpoint of EF and Given Point A is the midpoint of ED. Definition of a midpoint 2. Midpoint of DE = X , + x 2 V1 + yz 2 2 and the Midpoint of EF=\\ X2+X3 y1+>2 2 2 3. the slope of AB ()2+ ),)-(Vit y2) =0 and the slope (x2+ x3) -(x,+x2) of DF y1 1 =0 X 3 - X. 4. slope AB = slope DF Substitution Property of Equality 5. AB | DF Definition of parallel lines A. Reflexive property of equality O B. Definition of a midpoint O C. Definition of parallel lines D. Definition of the slope of a line