parts as the required polygon has sides. Draw B T, cuttingC E, in the first point of section and touching the circle inF. Draw C F, which is the side required. Fig. 1 shows the side of a square; Fig. 2 the side of apentagon; Fig. 3 a triangle and a hexagon. It will be notedthat, in the triangle, C… … 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
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