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Outside the Box Geometry


Fun, challenging geometry puzzles that will shake up how you think!


Are you ready to start loving geometry? This course is here to guide you through some of the magic of geometry, revealing the thought processes that lead to clever solutions to beautiful geometry problems.

By the end of this course, you'll develop your geometric toolkit to include many powerful theorems and proofs involving angles, polygons, and circles.

What is this?
A collection of interactive quizzes that will help you master basic geometry. Each quiz is written by experts and guided by Brilliant's Principles for Learning.

Who is this for?
Whether you're building a new foundation of Geometry skills or just want to practice problem-solving, there’s something here for you.

What should I know?
Some familiarity using variables and a willingness to be tenacious in your problem-solving. You should be comfortable with Mathematical Fundamentals.

What's inside?
About 65 quizzes, containing over 400 carefully crafted guided problems and explanations.


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