Two Column Proofs: Lesson (Geometry Concepts)

Discover more at www.ck12.org: http://www.ck12.org/geometry/Two-Colu.... Here you'll learn how to write a two-column geometric proof. This video gives more detail about the mathematical principles presented in Two Column Proofs. This is part of CK-12’s Geometry: Reasoning and Proof. See more at: 1. Conjectures and Counterexamples: http://www.ck12.org/geometry/Conjectu... 2. If-Then Statements: http://www.ck12.org/geometry/If-Then-... 3. Converse, Inverse, and Contrapositive: http://www.ck12.org/geometry/Converse... 4. Inductive Reasoning from Patterns: http://www.ck12.org/geometry/Inductiv... 5. Deductive Reasoning: http://www.ck12.org/geometry/Deductiv... 6. Truth Tables: http://www.ck12.org/geometry/Truth-Ta... 7. Properties of Equality and Congruence: http://www.ck12.org/geometry/Properti... 8. Two-Column Proofs: http://www.ck12.org/geometry/Two-Colu... Watch the whole series of CK-12's Geometry videos:    • CK-12 Geometry Concepts