九十七角形
x 1 = 2 cos  2 π 97 + 2 cos  72 π 97 + 2 cos  70 π 97 x 2 = 2 cos  10 π 97 + 2 cos  28 π 97 + 2 cos  38 π 97 x 3 = 2 cos  50 π 97 + 2 cos  54 π 97 + 2 cos  4 π 97 x 4 = 2 cos  56 π 97 + 2 cos  76 π 97 + 2 cos  20 π 97 x 5 = 2 cos  86 π 97 + 2 cos  8 π 97 + 2 cos  94 π 97 x 6 = 2 cos  42 π 97 + 2 cos  40 π 97 + 2 cos  82 π 97 x 7 = 2 cos  16 π 97 + 2 cos  6 π 97 + 2 cos  22 π 97 x 8 = 2 cos  80 π 97 + 2 cos  30 π 97 + 2 cos  84 π 97 x 9 = 2 cos  12 π 97 + 2 cos  44 π 97 + 2 cos  32 π 97 x 10 = 2 cos  60 π 97 + 2 cos  26 π 97 + 2 cos  34 π 97 x 11 = 2 cos  88 π 97 + 2 cos  64 π 97 + 2 cos  24 π 97 x 12 = 2 cos  52 π 97 + 2 cos  68 π 97 + 2 cos  74 π 97 x 13 = 2 cos  66 π 97 + 2 cos  48 π 97 + 2 cos  18 π 97 x 14 = 2 cos  58 π 97 + 2 cos  46 π 97 + 2 cos  90 π 97 x 15 = 2 cos  96 π 97 + 2 cos  36 π 97 + 2 cos  62 π 97 x 16 = 2 cos  92 π 97 + 2 cos  14 π 97 + 2 cos  78 π 97 {\displaystyle {\begin{aligned}x_{1}=&2\cos {\frac {2\pi }{97}}+2\cos {\frac {72\pi }{97}}+2\cos {\frac {70\pi }{97}}\\x_{2}=&2\cos {\frac {10\pi }{97}}+2\cos {\frac {28\pi }{97}}+2\cos {\frac {38\pi }{97}}\\x_{3}=&2\cos {\frac {50\pi }{97}}+2\cos {\frac {54\pi }{97}}+2\cos {\frac {4\pi }{97}}\\x_{4}=&2\cos {\frac {56\pi }{97}}+2\cos {\frac {76\pi }{97}}+2\cos {\frac {20\pi }{97}}\\x_{5}=&2\cos {\frac {86\pi }{97}}+2\cos {\frac {8\pi }{97}}+2\cos {\frac {94\pi }{97}}\\x_{6}=&2\cos {\frac {42\pi }{97}}+2\cos {\frac {40\pi }{97}}+2\cos {\frac {82\pi }{97}}\\x_{7}=&2\cos {\frac {16\pi }{97}}+2\cos {\frac {6\pi }{97}}+2\cos {\frac {22\pi }{97}}\\x_{8}=&2\cos {\frac {80\pi }{97}}+2\cos {\frac {30\pi }{97}}+2\cos {\frac {84\pi }{97}}\\x_{9}=&2\cos {\frac {12\pi }{97}}+2\cos {\frac {44\pi }{97}}+2\cos {\frac {32\pi }{97}}\\x_{10}=&2\cos {\frac {60\pi }{97}}+2\cos {\frac {26\pi }{97}}+2\cos {\frac {34\pi }{97}}\\x_{11}=&2\cos {\frac {88\pi }{97}}+2\cos {\frac {64\pi }{97}}+2\cos {\frac {24\pi }{97}}\\x_{12}=&2\cos {\frac {52\pi }{97}}+2\cos {\frac {68\pi }{97}}+2\cos {\frac {74\pi }{97}}\\x_{13}=&2\cos {\frac {66\pi }{97}}+2\cos {\frac {48\pi }{97}}+2\cos {\frac {18\pi }{97}}\\x_{14}=&2\cos {\frac {58\pi }{97}}+2\cos {\frac {46\pi }{97}}+2\cos {\frac {90\pi }{97}}\\x_{15}=&2\cos {\frac {96\pi }{97}}+2\cos {\frac {36\pi }{97}}+2\cos {\frac {62\pi }{97}}\\x_{16}=&2\cos {\frac {92\pi }{97}}+2\cos {\frac {14\pi }{97}}+2\cos {\frac {78\pi }{97}}\\\end{aligned}}}