### Home > CCG > Chapter Ch7 > Lesson 7.3.1 > Problem7-123

7-123.

For one of parts (a), (b) or (c) of problem 7-122, create a flowchart or a two-column proof for your conclusion. Remember to start with the given facts and to provide a justification for each step.

 Statements: Reasons: Step 2 (fact): $\overline{EC} = \overline{CA}$$m\angle CED=m\angle CAB$ GivenGiven Step 3 (fact): $m\angle ECD=m\angle ACB$ Vertical Angles Step 4 (conclusion): $ΔCAB≅ΔCED$ $\text{ASA}≅$