Introduction to Geometry Online Math Course

Introduction to Geometry

Fundamentals 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.
Required Text: Introduction to Geometry

24 weeks

Diagnostics

ARE YOU READY? DO YOU NEED THIS?

Documents

SYLLABUS
24 weeks ARE YOU READY? DO YOU NEED THIS? SYLLABUS  

Schedule

Wednesday
Apr 29 - Oct 7 		7:30 - 9:00
PM ET
Apr 29 - Oct 7
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
Marcus Neal $570
$631 w/books
$570
With Books $631
CLOSED
Tuesday
May 12 - Oct 20 		7:30 - 9:00
PM ET
May 12 - Oct 20
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
Joshua Zucker $570
$631 w/books
$570
With Books $631
CLOSED
Sunday
May 31 - Nov 22 		7:30 - 9:00
PM ET
May 31 - Nov 22
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
Aaron Doman $570
$631 w/books
$570
With Books $631
CLOSED
Sunday
May 31 - Nov 22 		7:30 - 9:00
PM ET
May 31 - Nov 22
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
Valentin Vornicu $570
$631 w/books
$570
With Books $631
FULL
Monday
Jun 1 - Nov 16 		7:30 - 9:00
PM ET
Jun 1 - Nov 16
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
Miles Dillon Edwards $570
$631 w/books
$570
With Books $631
CLOSED
Saturday
Jun 13 - Dec 19 		7:30 - 9:00
PM ET
Jun 13 - Dec 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
Alyssa Zisk $570
$631 w/books
$570
With Books $631
FULL
Sunday
Jun 21 - Dec 20 		7:30 - 9:00
PM ET
Jun 21 - Dec 20
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 $570
$631 w/books
$570
With Books $631
WAITLIST
Thursday
Jun 25 - Dec 10 		7:30 - 9:00
PM ET
Jun 25 - Dec 10
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
Achilleas Sinefakopoulos $570
$631 w/books
$570
With Books $631
FULL
Friday
Jul 17 - Jan 15 		7:30 - 9:00
PM ET
Jul 17 - Jan 15
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 Renato Gallegos Ruiz $570
$631 w/books
$570
With Books $631
ENROLL
Tuesday
Aug 11 - Feb 9 		7:30 - 9:00
PM ET
Aug 11 - Feb 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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Wednesday
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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Thursday
Aug 27 - Feb 25 		7:30 - 9:00
PM ET
Aug 27 - Feb 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
Wendy Hou $570
$631 w/books
$570
With Books $631
ENROLL
Tuesday
Sep 8 - Mar 9 		7:30 - 9:00
PM ET
Sep 8 - Mar 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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Monday
Sep 14 - Mar 15 		7:30 - 9:00
PM ET
Sep 14 - Mar 15
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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Friday
Sep 25 - Mar 26 		7:30 - 9:00
PM ET
Sep 25 - Mar 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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Sunday
Sep 27 - Mar 28 		7:30 - 9:00
PM ET
Sep 27 - Mar 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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Monday
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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Wednesday
Nov 11 - May 12 		7:30 - 9:00
PM ET
Nov 11 - May 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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Thursday
Dec 10 - Jun 3 		7:30 - 9:00
PM ET
Dec 10 - Jun 3
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
TBA $570
$631 w/books
$570
With Books $631
ENROLL
Spring 2021This course will be offered in Spring 2021. Click here to join our mailing list to be notified when the course schedule is available.

AoPS Holidays

There are no classes September 5–7, November 23–29, and December 21–January 3.

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

Lesson 1 Angles
Lesson 2 Triangle Angles and Congruent Triangles
Lesson 3 Isosceles & Equilateral Triangles, Perimeter, and Area
Lesson 4 Similar Triangles
Lesson 5 Similar Triangles and Right Triangles
Lesson 6 More Right Triangles!
Lesson 7 Special Parts of a Triangle
Lesson 8 Special Parts of a Triangle, Continued!
Lesson 9 Quadrilaterals
Lesson 10 More Quadrilaterals
Lesson 11 Polygons
Lesson 12 Geometric Inequalities
Lesson 13 Introduction to Circles
Lesson 14 Circles and Angles
Lesson 15 Tangents
Lesson 16 Power of a Point
Lesson 17 3D Geometry Part 1
Lesson 18 3D Geometry Part 2
Lesson 19 Transformations
Lesson 20 Analytic Geometry
Lesson 21 More Analytic Geometry
Lesson 22 Basic Trigonometry
Lesson 23 Problems!
Lesson 24 More Problems!

Required Textbook

Introduction to Geometry
By Richard Rusczyk
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.

This course was very helpful, and it was a great way to learn geometry. I had a lot of fun doing the problem sets and in class. Some of the problems were very challenging but it was very satisfying if I was able to solve them. I am very glad I took this course and am excited to move on to other math next year.

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