Two Column Proofs: Lesson (Basic Geometry Concepts)

Here you'll learn how to create two-column proofs with statements and reasons for each step you take in proving a geometric statement.

This video provides the student with a walkthrough on two column proofs.

This is part of CK-12’s Basic Geometry: Reasoning and Proof. See more at:

1. Inductive Reasoning from Patterns:

2. Deductive Reasoning:

3. If-Then Statements:

4. Converse, Inverse, and Contrapositive:

5. Conjectures and Counterexamples:

6. Properties of Equality and Congruence:

7. Two-Column Proofs: