Table of topics and assignments

                                             
Learning Assistant: Henry Zorrilla.  His schedule (outside DM 409A):
                                              Tuesdays and Thursdays11:00am-12:00noon, Mondays 1-3pm, Wednesdays 2-4pm.


Date
Sections
covered

Suggested
assignment
Comments
Jan 5
Introd. to Chapter 1

Review vectors from any Calculus III textbook
Jan 7
Review of vectors
see sections 12.2, 12.3
of Anton's Calculus, 8th edition
Do as many exercises from these sections to feel confortable with the concepts.
In particular, do 29-40, 51-58 from 12.2;
                          4-10, 13, 14, 22-28, 39-44 from 12.3.
I am teaching Calculus III, TR 12:30-2:10pm, GC  287B.
If you want to refresh on vectors by sitting in my Calc. III class,
feel free to do so.
Jan. 12
Review vectors
12.4, 12.5, 12.6 of 
Anton's Calculus
12.4 - #10, 11, 15, 17, 21, 25, 26, 31-34, 41, 42
12.5 - #11, 15, 25, 27, 37, 45, 52
12.6 - #13, 17,  23, 25, 27, 35, 36, 50
Homewok 1 due Tuesday, Jan. 19
Jan. 14
Chapter 1
Pbs 1, 2, 3  Chp. 1 textbook

Jan. 19
Chapter 1
see Homework 2
Homework 2 due Tuesday, Jan. 26
Jan. 21
2.1.1 Incidence Theorem
2.1.3 Thales in 3-d
Prove Thales thm. for two intersecting lines  in the plane, cut by three parallel lines.
Do (preferably using vectors) Pb. 23, page 94.
Section 3.1 in the textbook contains some material on affine maps and
the associated linear maps. A different definition for an affine map is used;
it is a good exercise to understand why this is equivalent to the definition used in class.
Jan. 26
2.1.2 Pappus Thm.
2.1.4.Desargues Thm
Newton's complete
quadrilateral Thm.
Prove Pappus Thm. in the case that the two initial lines are parallel.

Prove Desargues Thm. in the case that the three initial lines are parallel.
A good complementary book for the course is
"Geometry: A Comprehensive Course" by Dan Pedoe.
Right now, you can find the book on
www.barnesandnoble.com for less than 4 dollars.
I also put a copy of this book on reserve in the library.
Jan. 28
2.2.3 Congruence and similarity of triangles
Try Pbs. 2, 3, 9, page 89-91
Come up with a criterion of congruency for quadrilaterals. Would
an SSSS criterion work?
Prove remaining parts of Theorem 14 and prove Theorem 16 from Chapter 2

Look on and know proofs for Theorems 7, 8, 9, 10, 11, 12
from Chapter 2 textbook (it's ok to have proofs different than the
the textbook).
Feb. 2
2.2.6 Important lines and points in
a triangle
Additional suggested problems -- Set 1
(these are not for turning in)
Homework 3 due Tuesday, Feb. 9

Feb. 4
2.2.7 Euler line
Fill in the details of the proof for the Euler line Theorem
Try Pbs. 11, 12, 13 from Chapter 2, textbook.
(for 11&12 use the Law of Sines and some trig. identities)
I have to reverse the decision about the room for our class.
DM 409A is too small for 30 students. Thus, we'll still meet in
our regular room CP102 (they fixed the screen).
Feb. 9
2.2.4 Menelaus & Ceva
Prove the implication left exercise of  Ceva's Theorem.
Try Pbs. 6, 15 page 90-92 textbook (try to use Ceva for #15
imitating the proof in the textbook of  Theorem 19 ).
Problems 4.1-4.5 are also very good problems for this section.
Exam1 will be on Thursday, Feb. 18
(final date)
Feb. 11
2.2.8 & 2.2.9 Area formulae;
Isoperimetric inequality
Prove Theorem 28 and Corollary 4 (p. 44-45 textbook)
Additional suggested problems -- Set 2
Here is a link to Peter Lax's proof of isoperimetric inequality.
Now you can enjoy  it for yourself . I will not ask you this for the exam!
Feb. 16
Review for Exam 1

For Exam 1 any problem in the suggested or assigned homework is a possible exam question. You also have to know all the important definitions and theorems
covered, with their proofs (parts of the proofs could also be on the exam).
Feb. 18
Exam 1

This is a copy of Exam 1. Choose two problems from 4(b), 5(b), 6, 7.
that you did not do well in class, do them home, and turn them in on Thursday, Feb. 25.
You'll receive half the points above what you scored in class.
The offer is valid for a maximum of 12 bonus points.
Feb. 23
2.3.2 Inscribed angles and more
Suggested Problems

Feb. 25
Cyclic (chordal) quadrilaterals
Theorem 38 (page 56)
2.3.3 The nine-point circle
Suggested Problems

Mar. 2
2.3.3 The nine-point circle

Homework 4 due Tuesday, Mar. 9
Mar. 4
2.3.4 Simson line,
Steiner (first) line
2.3.5 Tangent quadrilaterals
Try Pbs. 19, 21, 22 page 93 textbook.

More suggested Problems

Mar. 9
2.3.1 Power of a point
w.r.t. a circle (Thms 31, 32)
Apollonius' Circle
Suggested Problems
Nice pictures and further problems about Apollonius circles you can find
on Jim Wilson's page at University of Georgia

Mar. 11
Geometric extremum problems
(Heron and Fagnano Problems)

Homework 5 due Thursday, Mar. 25
Mar. 16
Spring Break



Mar. 18
Spring Break


Mar. 23
2.3.6 Inversion (Reflection)  in a circle
Try Pbs.24, 25 page94 textbook

Some more suggested problems on circle inversion.
Since many of you have Adv. Calculus midterm on Mar. 25,
the Exam 2 for College Geometry is postponed one week. Thus, it will be
on April 1 (no joke!).  It covers material done between Feb. 23-Mar.25.
All suggested and homework problems
are potential exam questions.
Mar. 25
2.3.6 More inversion
Just one more suggested problem
Since I'll not be here later today (and will be gone the entire weekend),
you can return Hwk. 5 on Tue. Mar. 30.
Mar. 30
Review for exam


Apr. 1
Exam 2

This is a copy of  Exam 2
Choose any parts of problems 2, 3, 4  that you did not do well in class,
do them home, and turn them in on Thursday, Apr. 8.
You'll receive half the points above what you scored in class.
The offer is valid for a maximum of 15 bonus points.
Apr. 6
2.3.6 Linear Fractional Transformations
Suggested problems for LFT
More suggested problems for LFT

Apr. 8
2.3.6. Cross-Ratio

Homework 6 due Thursday, April 15
Apr. 13
4.2 Poincare model of H^2


Apr. 15
Review for Final
Look at all suggested and Homework problems.
Look also at Pbs. 24, 25 page 94 textbook.
Review session: Saturday, April 17, 12:00noon-1:30pm
in DM 409A

I will also be in my office on Monday, April 19
roughly from 10:00am to 1:00pm
Apr.20

Final exam
9:45 -11:45 regular room
Here are your scores on the final (out of 150)
and the grade for the class.

Enjoy your Summer!