- Course Description
(also in pdf)
grader, email addresses, phone numbers, and other
- Estimated schedule and
- Web links and stuff. ( indicates the page
needs java to function properly.)
Some sources for the
other than the bookstore.
A java-enhanced version of
Elements. Or, if you are impatient, you might prefer a
trip through the Elements.
history of non-Euclidean geometry.
proofs of the Pythagorean Theorem (43 last time I looked) from
has a lot of
nice stuff on geometry.
An interactive page with the four
classical "centers" of a triangle (as well as the
excenter and the
A much longer list of triangle centers can be found on
Centers page. He also has a number of
The nine-point circle.
The Theorems of Menelaus and Ceva.
Three Euclidean construction exercises:
bisecting a segment,
constructing a tangent,
constructing a regular octagon.
(Sadly, some people's computers hate these exercises.)
hyperbolic triangle (sometimes you can, sometimes you can't).
A pair of hyperparallel lines,
and a pair of parallels that aren't.
The defect of a hyperbolic triangle.
site has a fair amount of meterial about hyperbolic geometry, including
a java applet to do constructions in the
How to make some
approximate hyperbolic planes,
(out of paper, or crocheting one), from David Henderson's text
in Euclidean, Spherical, and Hyperbolic Spaces.
Hyperbolic construction exercises:
inscribed reqular quadrilateral,
circmscribed reqular quadrilateral.
Geometry of the Sphere,
by John Polking.
theory notes that we will be using. Also, an
to help compute the Lake and Island polynomial in certain examples.
A number of links to
various pages on knot theory.
polynomial of the trefoil and other knots.