Demonstration:—When the side, C F, is found, place otherlines equal to it in the circle with their ends in contact, untilthe polygon is complete; then, if it has an even number ofsides, a diameter which bisects a side or an angle on oneside of the center does the same on the opposite side. If it … has an odd number of sides, a diameter which bisects a sideon one side of the center bisects an angle on the oppositeside; thus proving that the sides are regular, and conse-quently equal. Albert Bohdeli.Philadelphia, Mo BY PKOFESSOK A. RIOCO, OF MODENA, ITALY.
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