Tuesday, September 13, 2011

1.2 Use Segments and Congruence

Before you learned about points, lines, and planes.
Now You will use segment postulates to identify congruent segments
Why...
How to calculate flight distance?

News articles: Model Plane Flies the Atlantic


Vocabulary

Postulate, axiom

A rule that is accepted without proof

Theorem

A rule that can be proved

Coordinate

The real number that corresponds to a point

Distance

The distance between two points A and B, written as AB, is the absolute value of the

difference of the coordinates of A and B.

Between

When three points are collinear, you can say that one point is between the other two.

Congruent segments

Line segments that have the same length






In class examples: Chapter 1 lessons 2, examples 2 and 4