Class 3

Monday, January 12

Today’s Discussion Topics

Go over discussion topic and homework from last time

Today’s New Topics

More on axiomatic systems and incidence geometry
The parallel postulates

Tonight’s Homework

Read Sections 2.3 and 2.4
Do Exercises 2, 5, 6, and 7 on pages 23-24
Turn in Friday, January 16: Exercise 12, page 24. Please remember to work alone.
Discussion topic for next time: What is an existence theorem? Uniqueness theorem?