Introduction to Geometry Online Math Course
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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.

24 weeks

Diagnostics

ARE YOU READY? DO YOU NEED THIS?

Documents

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

Schedule

Tuesday
Jan 5 - Jun 15
7:30 - 9:00
PM ET
Jan 5 - Jun 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
$595
$656 w/books
$595
With Books $656
FULL
Thursday
Jan 21 - Jul 1
7:30 - 9:00
PM ET
Jan 21 - Jul 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
$595
$656 w/books
$595
With Books $656
ENROLL
3 spots left
Sunday
Jan 24 - Jul 18
7:30 - 9:00
PM ET
Jan 24 - Jul 18
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
$595
$656 w/books
$595
With Books $656
ENROLL
Friday
Feb 5 - Jul 16
7:30 - 9:00
PM ET
Feb 5 - Jul 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
$595
$656 w/books
$595
With Books $656
ENROLL
Monday
Feb 8 - Aug 2
7:30 - 9:00
PM ET
Feb 8 - Aug 2
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
$595
$656 w/books
$595
With Books $656
ENROLL
Wednesday
Feb 24 - Aug 4
7:30 - 9:00
PM ET
Feb 24 - Aug 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
$595
$656 w/books
$595
With Books $656
ENROLL
Thursday
Mar 18 - Aug 26
7:30 - 9:00
PM ET
Mar 18 - Aug 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
$595
$656 w/books
$595
With Books $656
ENROLL
Sunday
Apr 4 - Oct 3
7:30 - 9:00
PM ET
Apr 4 - Oct 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
$595
$656 w/books
$595
With Books $656
ENROLL
Monday
Apr 19 - Oct 18
7:30 - 9:00
PM ET
Apr 19 - Oct 18
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
$595
$656 w/books
$595
With Books $656
ENROLL
Friday
Apr 30 - Oct 8
7:30 - 9:00
PM ET
Apr 30 - Oct 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
$595
$656 w/books
$595
With Books $656
ENROLL
Summer 2021This course will be offered in Summer 2021. Click here to join our mailing list to be notified when the course schedule is available.

AoPS Holidays

There are no classes May 29–31, July 3–5, and September 4–6.

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.

Not only did Introduction to Geometry help me become a better math student, it also helped me to think more abstractly and look for multiple roads to solve a problem. This class challenged me to become a better thinker.

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