Don't step on the grass!

Geometry Level 3

In which figure is the black path the shortest?

Difficulty: slightly spicy 🌶🌶🌶

This problem gets two chili peppers because there are some quick-and-clever solutions where the path lengths are carefully compared but never calculated, however most who guess at a glance guess wrong.

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Don't step on the grass!

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 6 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.