Monday, February 16
Today’s Discussion Topics
Homework 3 due today
Go over discussion topic and homework from last time.
Today’s New Topics
The Alternate Interior Angles Theorem (4.4.2)
Existence of Parallels
Tonight’s Homework
Read Section 4.4
Do exercises 4.4 # 1, 2, 3
Discussion Topic for next class: What does the Saccheri-Legendre Theorem say, and does it hold for spheres?