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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. 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

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	Martha Maria Bernal Guillen	$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	Jon Joseph	$595 $656 w/books	$595 With Books $656 ENROLL 5 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	Dan Kneezel	$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	Christian Hokaj	$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	Jeffrey Hankins	$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	Patrick Barringer	$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	Patrick Barringer	$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	Heather Finotti	$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	Marcus Neal	$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	Achilleas Sinefakopoulos	$595 $656 w/books	$595 With Books $656 ENROLL
Summer 2021	This 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.

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