Need Help?
Need help finding the right class? Have a question about how classes work?
Introduction to GeometryFundamentals of geometry, including angles, triangle similarity and congruence, complicated area problems, mastering the triangle, special quadrilaterals, polygons, the art of angle chasing, power of a point, 3-dimensional geometry, transformations, analytic geometry, basic trigonometry, geometric proof, and more. |
24 weeks |
| 24 weeks ARE YOU READY? DO YOU NEED THIS? SYLLABUS |
Schedule
|
Wednesday
Apr 23 - Oct 1 |
7:30 - 9:00 PM ET
Apr 23 - Oct 1
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Christian Hokaj |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
CLOSED
With Books $775
|
|
Sunday
May 11 - Nov 9 |
7:30 - 9:00 PM ET
May 11 - Nov 9
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Radu Andrei Cebanu |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Tuesday
May 20 - Oct 28 |
7:30 - 9:00 PM ET
May 20 - Oct 28
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Homero Gallegos |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Monday
Jun 16 - Dec 8 |
7:30 - 9:00 PM ET
Jun 16 - Dec 8
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Radu Andrei Cebanu |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Friday
Jun 20 - Jan 9 |
7:30 - 9:00 PM ET
Jun 20 - Jan 9
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Andrea Knapp |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Sunday
Jun 29 - Jan 11 |
7:30 - 9:00 PM ET
Jun 29 - Jan 11
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Christian Hokaj |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Monday
Jul 14 - Jan 19 |
7:30 - 9:00 PM ET
Jul 14 - Jan 19
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Mike Livergood |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Wednesday
Aug 13 - Feb 11 |
7:30 - 9:00 PM ET
Aug 13 - Feb 11
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Jeffrey Hankins |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Tuesday
Aug 26 - Feb 24 |
7:30 - 9:00 PM ET
Aug 26 - Feb 24
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Grace Unger |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Sunday
Sep 7 - Mar 8 |
7:30 - 9:00 PM ET
Sep 7 - Mar 8
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Annie Meyers |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Thursday
Sep 11 - Mar 12 |
7:30 - 9:00 PM ET
Sep 11 - Mar 12
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Christian Hokaj |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Wednesday
Sep 24 - Mar 25 |
7:30 - 9:00 PM ET
Sep 24 - Mar 25
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Dylon Chow |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Sunday
Oct 26 - Apr 26 |
7:30 - 9:00 PM ET
Oct 26 - Apr 26
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Carlos Bovell |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Monday
Nov 3 - May 4 |
7:30 - 9:00 PM ET
Nov 3 - May 4
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Grace Unger |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
|
Friday
Dec 5 - May 29 |
7:30 - 9:00 PM ET
Dec 5 - May 29
7:30 - 9:00 PM Eastern 6:30 - 8:00 PM Central 5:30 - 7:00 PM Mountain 4:30 - 6:00 PM Pacific Click here to see more time zones |
Orianne Luo |
$710
(~$30/lesson)
$775 w/books
|
$710
(~$30/lesson)
ENROLL
With Books $775
|
AoPS Holidays
There are no classes May 24 ‐ 26, July 4 ‐ 6, August 29 ‐ September 1, October 31, November 24 ‐ November 30, and December 20, 2025 ‐ January 2, 2026.
Who Should Take?
This is the most challenging of our Introduction series of classes. We recommend that students complete our Introduction to Algebra B course, or are able to pass the Introduction to Algebra B post-test, prior to taking Introduction to Geometry.Lessons
| 1 | Angles |
| 2 | Triangle Angles and Congruent Triangles |
| 3 | Isosceles & Equilateral Triangles, Perimeter, and Area |
| 4 | Similar Triangles |
| 5 | Similar Triangles and Right Triangles |
| 6 | More Right Triangles! |
| 7 | Special Parts of a Triangle |
| 8 | Special Parts of a Triangle, Continued! |
| 9 | Quadrilaterals |
| 10 | More Quadrilaterals |
| 11 | Polygons |
| 12 | Geometric Inequalities |
| 13 | Introduction to Circles |
| 14 | Circles and Angles |
| 15 | Tangents |
| 16 | Power of a Point |
| 17 | 3D Geometry Part 1 |
| 18 | 3D Geometry Part 2 |
| 19 | Transformations |
| 20 | Analytic Geometry |
| 21 | More Analytic Geometry |
| 22 | Basic Trigonometry |
| 23 | Problems! |
| 24 | More Problems! |
Required Textbook
|
Introduction to Geometry
A full course in challenging geometry for students in grades 7-10, including topics such as similar
triangles, congruent triangles, quadrilaterals, polygons, circles, funky
areas, power of a point, three-dimensional geometry, transformations, introductory trigonometry, and
more.
Related course: Introduction to Geometry |
