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Try This Geometry Problem

Geometry Level 1

Mary drew a triangle on the board. What is the sum of all interior angles in a triangle?

90^ \circ

180 ^ \circ

270 ^ \circ

360 ^ \circ

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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 8 million people

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including olympiad champions, researchers, and professionals.

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by Calvin Lin

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