Du Tume your reasons vertically

9. Given: B is the midpoint of AC, AB a CD

Prove: C is the midpoint of BD

С

D

Reasons

1.

Statements

1. Bis the midpoint of AC

2. AB - BC

3. AB CD

4. AB CD

5. BC = CD

6. Cis the midpoint of BD

2

3.

REASONS Bank

Definition of Congruence

Given

Definition of Midpoint

Substitution

4.

5.

6.