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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

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including olympiad champions, researchers, and professionals.

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by Calvin Lin

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