A geometry problem by Chung Kevin

Geometry Level 1

If the perimeter of the yellow triangle is 20,
and the perimeter of the blue triangle is 30,
and the perimeter of the six-pointed star is 40,
what is the perimeter of the green hexagon?

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

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A geometry problem by Chung Kevin

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 7 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.