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November 29, 2011

Problem of the Week
for Tuesday, November 29, 2011

Two 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