Geometry10-22-13

QCRWrite the converse, inverses and

contrapositive for this conditional statement.

QCRWrite the following sentence as a conditional statement.

Roses are beautiful flowers.

Reasoning in Algebra & GeometryHow 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.

Properties of EqualityAddition 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/cSubstitution Property: If a=b, then b can

be substituted for a in any equation.

Practice Guided Practice: Worksheet

Independent Practice:

Homework Worksheet

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