### Home > CCG > Chapter 7 > 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. Homework Help ✎

Facts are things that are given or have theorems, definitions or postulates to back them up.

Statements:

Reasons:

$\overline{EC} = \overline{CA}$

$m\angle CED=m\angle CAB$

Given

Given

$m\angle ECD=m\angle ACB$

Vertical Angles

$ΔCAB≅ΔCED$

$\text{ASA}≅$