Given: line segment AB≅line segment BC

Prove: The base angles of an isosceles triangle are congruent.

The two-column proof with missing statement proves the base angles of an isosceles triangle are congruent.

Statement     Reason
1. segment BD is an angle bisector of ∠ABC. 1. by Construction
2. ∠ABD ≅ ∠CBD 2. Definition of an Angle Bisector
3. segment BD ≅ segment BD 3. Reflexive Property
4.      4. Side-Angle-Side (SAS) Postulate
5. ∠BAC ≅ ∠BCA    5. CPCTC


Which statement can be used to fill in the numbered blank space?
A. ΔDAB ≅ ΔDBC

B. ΔABD ≅ ΔABC

C. ΔABC ≅ ΔCBD

D. ΔABD ≅ ΔCBD

Given line segment ABline segment BC Prove The base angles of an isosceles triangle are congruent The twocolumn proof with missing statement proves the base ang class=