1. Bell Work If 2 Lines are skew, then they do not intersect 1) Converse 2) Inverse 3) Contrapositive 4) Biconditional

2. Chapter 2.4 Reasoning in Algebra 1.0 Students understand and demonstrate example of deductive reasoning 3.0 Students construct and judge the validity of a logical argument

3. Background In geometry you accept postulates and properties as true. You use deductive reasoning to prove other statements. Some of the properties that you accept as true are the properties of equality from algebra

4. Addition Property

5. Subtraction Property Example:

6. Multiplication Property Example:

7. Division Property Example:

8. Substitution Property Example:

9. Distributive Property

10. Reflexive Property Example:

11. Symmetric Property –If Then Example:

12. Transitive Property –If and Then Example:

13. Classwork P106 #5-21 all