# SOLUTION: How many quadrilaterals can be found from joining the vertices of a heptagon? Can you please provide me with a formula that will work for all polygons? Regards.

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 Click here to see ALL problems on Polygons Question 97754: How many quadrilaterals can be found from joining the vertices of a heptagon? Can you please provide me with a formula that will work for all polygons? Regards.Answer by stanbon(57387)   (Show Source): You can put this solution on YOUR website!How many quadrilaterals can be found from joining the vertices of a heptagon? Can you please provide me with a formula that will work for all polygons? ---------------------- Quadrilaterals have four vertices. A heptagon has seven vertices. The number of ways you can select four from the seven is 7C4 = 7!/(7-4)!4! = 35 ------------------- If a n-gon has n vertices you can form nC4 quadrilaterals. =============== Cheers, Stan H.