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The sum of interior angles for any polygon is: s(n)=180(n-2)  where n is the number of sides, a hexagon has six so s(6)=180(6-2) s(6)=180*4 s(6)=720° Actually none of the statements explains Marco's error... A hexagon does have 6 vertices A hexagon can be divided into 6 triangles not 4 and not 2... The sum of interior angles of a triangle do equal 180° Marco's statement is not correct and contains a fatal error... That being that he did not use the formula: s(n)=180(n-2)

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