### Home > CCG > Chapter Ch7 > Lesson 7.3.1 > Problem 7-123

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.

Make a two-column proof and start with the facts.

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

**Statements:**

**Reasons:**

Given

Given

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