*BRAND NEW* Self-paced Introduction to Counting & Probability.  Enroll today!

Need Help?

Need help finding the right class? Have a question about how classes work?

# 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?

SYLLABUS
24 weeks

## Schedule

### AoPS Holidays

There are no classes August 30 ‐ September 2, October 31, November 25 ‐ December 1, and December 21, 2024 ‐ January 3, 2025.

### 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 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. Related course: Introduction to Geometry

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.