What is a proof?

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definition: any kind of valid argument that shows how a statement is true.

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​Different Types of Proofs:

​1.) Paragraph: simply a proof that is written in paragraph form.

2.) Two Column: a list of statements, and the reasons that we know those statements are true.

​3.) Flow Proofs: uses a diagram to show each statement leading to the conclusion.

Angle Relationships:

We can use these angle relationships to determine if two lines are parallel. ​

Angle Relationship