1. 10-22-13

2. QCR Write the converse, inverses and contrapositive for this conditional statement.

3. QCR Write the following sentence as a conditional statement. Roses are beautiful flowers.

5. Reasoning in Algebra & Geometry How are algebraic properties useful in geometry? In geometry we accept postulates and properties as true. Some of the properties that we accept as true are the properties of equality from algebra.

6. Properties of Equality Addition Property: If a=b, then a+c=b+c. Subtraction Property: If a=b, then a-c=b-c. Multiplication Property: If a=b, then a(c) = b(c) Division Property: If a=b, and c Ø = 0, then a/c = b/c Substitution Property: If a=b, then b can be substituted for a in any equation.

7. Practice Guided Practice: Worksheet Independent Practice:

8. HomeworkWorksheet Summary: What do the words “deductive reasoning” mean to you? How do you think they apply to geometry?