4. Or you may be convinced that it is too difficult for mortal man to understand
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9. Circumscribe polygons about a circle and inscribe polygons in a circle. Circumscribed polygons Inscribed polygons
10. Measure the perimeter of each polygon and make a table. Notice the differences decrease as the number of sides increase. Using this method, Pi was found to be between 3 1/7 and 3 10/71.