Math 465: Foundations of Geometry

Math 584: Euclidean and Non-Euclidean Geometry

Information Page, Fall 2019


I will finish grading by Wednesday night. I will be in my office on Thursday, 12-1 and Friday, 11.15-12.30 pm. Come by to see your final. Or e-mail me to get your score and final grade.



A short biography of Euclid and Euclid

Here is a short note about Euclid and his "Elements".


Here are numerous proofs of the Pythagorean Theorem.


Here is a discussion of Ptolemy's theorem.

Here is a "proof" that all triangles are equilateral.


Nine point circle

Here are some properties of the nine-point circle.

Here and here you will find a discussion of the orthic traingle and its properties.


Here is a proof of the Simson's line theorem, and here is a discussion of the Simson line.

Here and here is a discussion of Miquel point.

Here is a nice visualization of Miquel point (you need to use mozilla browser and have updated Java).

Here is a proof of Miguel point theorem (Pivot theorem) and also several properties of the Simson line.

Here is a discussion of Menealus's Theorem, with several proofs and additional topics


Here is a nice article about finite geometries.

Here is a short discussion of affine and projective planes.