Problem of the Week for Tuesday, November 29, 2011Two triangles can intersect to split the plane up into as many as eight different regions. Two quadrilaterals (four-sided polygons) can intersect to split the plane up into at most how many different regions? Include your picture with your answer. (The Math Department would like to thank a former Saint Ann's teacher, Dan Finkel, for suggesting this problem.) Winners of the intersecting quadrilaterals challenge |

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