51. A polypon of twelve sides is called aoodecagon. … Similar fgvres are such as have all theirMDgles A, B, c, D, E, a, b, c, d, e, respectivelyequal, each to each, and their sides A b, b c,c D, &c., a,b,bc,cd, &c., about the equal anglesproportional. D
Design · Decoration and ornament · Art
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