# Math 618

(Last updated Friday, Feb. 26 at 2pm)

## Meetings

*The first class meeting will be on Monday, February 1 at 4:40pm. *

After the first week of class, we will use Monday's class time as an office hour meeting 4:40p–5:40pm and we will have a live class session on Wednesdays 4:40–5:40pm.

All meetings will occur on Zoom (Zoom Link).

## Materials

Contact: You can always reach me via email at nicholas.vlamis@qc.cuny.edu. I will generally respond within 24 hours.

## Week 4 (2/22--2/26)

We show that rigid motions preserve lines and are completely determined by their behavior on any one triangle.Introduce reflections and prove that they are rigid motions. Assignment 3 --- Due Wednesday, March 3.

## Week 3 (2/15--2/19)

*Schedule Change Notice:*The college is closed on Monday in observance of President's day. Office hours on Monday are cancelled, but Wednesday's class time will be treated as an office hour. There is only one video for this week, since we would have lost a day during a regular in-person class.

Assignment 2 --- Due Wednesday, February 24.

## Week 2 (2/8--2/12)

Introduce the notion of congruence and two congruence theorems (side-angle-side and side-side-side).Introduct the notion of parallelism and establish the Euclidean theorems about parallel lines that hold for all absolute geometries.Make sure to read the Homework Guide document so that you understand how to properly complete the homework.

## Week 1 (2/1--2/5)

Assignment 0 — Due Friday, February 5

*The Foundation's of Geometry*by David Hilbert (Of historical interest, not required)