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Reinhardt polygon

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The relation between perimeter and diameter for these polygons was proven by Reinhardt, and rediscovered independently multiple times. The relation between diameter and width was proven by Bezdek and Fodor in 2000; their work also investigates the optimal polygons for this problem when the number of
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of the endpoints of these arcs is defined as a Reinhardt polygon. Necessarily, the vertices of the underlying Reuleaux polygon are also endpoints of arcs and vertices of the Reinhardt polygon, but the Reinhardt polygon may also have additional vertices, interior to the sides of the Reuleaux polygon.
145:. Some Reuleaux polygons have side lengths that are irrational multiples of each other, but if a Reuleaux polygon has sides that can be partitioned into a system of arcs of equal length, then the polygon formed as the 1066: 582: 520: 25:
Four 15-sided Reinhardt polygons (yellow), inscribed in Reuleaux polygons (curved black outer boundaries). The diameters are shown as blue line segments within each polygon.
796: 446: 1095: 338: 1559: 1167: 1142: 1119: 979: 959: 939: 919: 899: 876: 856: 824: 765: 745: 712: 692: 669: 649: 626: 606: 466: 406: 386: 362: 310: 290: 270: 243: 215: 195: 171: 111: 87: 67: 984: 448:, from which the dimensions of the polygon may be calculated. If the side length of a Reinhardt polygon is 1, then its perimeter is just 468:. The diameter of the polygon (the longest distance between any two of its points) equals the side length of these isosceles triangles, 1651: 137:
is a convex shape with circular-arc sides, each centered on a vertex of the shape and all having the same radius; an example is the
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has two distinct odd prime factors and is not the product of these two factors, sporadic Reinhardt polygons also exist.
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to obtain the same polygon. The Reinhardt polygons that have this sort of rotational symmetry are called
2160: 2100: 1739: 533: 471: 2044: 1814: 1744: 1686: 1101:. However, the number of sporadic Reinhardt polygons is less well-understood, and for most values of 2150: 2125: 2095: 2090: 2049: 1764: 1395: 34: 2155: 1696: 1616: 1475: 1430: 1404: 417: 1144:(counting two polygons as the same when they can be rotated or flipped to form each other) are: 1729: 1637: 138: 770: 121:
for their diameter, and the largest possible width for their perimeter. They are named after
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Hare, Kevin G.; Mossinghoff, Michael J. (2019), "Most Reinhardt polygons are sporadic",
2140: 2120: 2085: 2080: 1711: 1691: 1565:, North-Holland Math. Stud., vol. 87, Amsterdam: North-Holland, pp. 209–214, 1544: 1350:
Mossinghoff, Michael J. (2011), "Enumerating isodiametric and isoperimetric polygons",
1152: 1127: 1104: 1098: 964: 944: 924: 904: 884: 861: 841: 809: 750: 730: 697: 677: 654: 634: 611: 591: 451: 391: 371: 347: 295: 275: 255: 246: 228: 200: 180: 156: 96: 72: 52: 45:, each vertex of a Reinhardt polygon participates in at least one defining pair of the 1570: 2175: 2115: 1966: 1859: 1779: 1721: 1620: 1479: 1434: 341: 340:
smaller arcs. Therefore, the possible numbers of sides of Reinhardt polygons are the
90: 694:-sided polygons with their perimeter, and the smallest possible perimeter among all 2145: 2015: 1971: 1935: 1925: 1920: 831: 767:-sided regular Reuleaux polygons are symmetric: they can be rotated by an angle of 365: 174: 651:-sided polygons with their diameter, and the smallest possible diameter among all 608:-sided polygons with their diameter, and the smallest possible diameter among all 2054: 1961: 1940: 1930: 835: 146: 21: 1366: 2059: 1915: 1905: 1789: 1463: 1418: 218: 2034: 2024: 2001: 1991: 1981: 1910: 1819: 1784: 827: 114: 1121:
the total number of Reinhardt polygons is dominated by the sporadic ones.
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Bezdek, A.; Fodor, F. (2000), "On convex polygons of maximal width",
858:-sided Reinhardt polygons are periodic. In the remaining cases, when 719:
sides is a power of two (for which Reinhardt polygons do not exist).
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Larman, D. G.; Tamvakis, N. K. (1984), "The decomposition of the
802:, and Reinhardt polygons without rotational symmetry are called 1633: 1061:{\displaystyle {\frac {p2^{n/p}}{4n}}{\bigl (}1+o(1){\bigr )},} 526:
of the polygon (the shortest distance between any two parallel
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Vincze, Stephen (1950), "On a geometrical extremum problem",
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Datta, Basudeb (1997), "A discrete isoperimetric problem",
177:, then it is not possible to form a Reinhardt polygon with 368:, or two times a prime number, there is only one shape of 292:
sides may be formed by subdividing each arc of a regular
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sides, the Reinhardt polygons have the largest possible
1561:-sphere and the boundaries of plane convex domains", 1547: 1155: 1130: 1107: 1074: 987: 967: 947: 927: 907: 887: 864: 844: 812: 773: 753: 733: 700: 680: 657: 637: 614: 594: 536: 474: 454: 426: 394: 374: 350: 318: 298: 278: 258: 231: 203: 183: 159: 99: 75: 55: 1498:
Jahresbericht der Deutschen Mathematiker-Vereinigung
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The diameter pairs of a Reinhardt polygon form many
2068: 2014: 1954: 1898: 1837: 1828: 1720: 1672: 588:They have the largest possible perimeter among all 1553: 1161: 1136: 1124:The numbers of these polygons for small values of 1113: 1089: 1060: 973: 953: 933: 913: 893: 870: 850: 818: 790: 759: 739: 706: 686: 663: 643: 620: 600: 576: 514: 460: 440: 400: 388:-sided Reinhardt polygon, but all other values of 380: 356: 332: 304: 284: 264: 237: 209: 189: 165: 105: 81: 61: 1321:, the polygons maximizing area for their diameter 69:sides exist, often with multiple forms, whenever 420:with the sides of the triangle, with apex angle 674:They have the largest possible width among all 631:They have the largest possible width among all 408:have Reinhardt polygons with multiple shapes. 1645: 1050: 1025: 8: 1563:Convexity and graph theory (Jerusalem, 1981) 584:. These polygons are optimal in three ways: 1494:"Extremale Polygone gegebenen Durchmessers" 344:, numbers that are not powers of two. When 1834: 1652: 1638: 1630: 1546: 1408: 1365: 1154: 1129: 1106: 1073: 1049: 1048: 1024: 1023: 1002: 998: 988: 986: 966: 946: 926: 906: 886: 863: 843: 811: 780: 772: 752: 732: 699: 679: 656: 636: 613: 593: 560: 540: 535: 498: 478: 473: 453: 430: 425: 393: 373: 349: 322: 317: 297: 277: 257: 230: 202: 182: 158: 117:for their diameter, the largest possible 98: 74: 54: 1146: 901:, there are only finitely many distinct 245:sides is a Reinhardt polygon. Any other 49:of the polygon. Reinhardt polygons with 1331: 981:-sided periodic Reinhardt polygons is 747:-sided Reinhardt polygons formed from 530:) equals the height of this triangle, 628:-sided polygons with their perimeter. 7: 1388: 1386: 1384: 1445: 1443: 1345: 1343: 1341: 1339: 1337: 1335: 16:Polygon with many longest diagonals 14: 714:-sided polygons with their width. 671:-sided polygons with their width. 941:is the smallest prime factor of 577:{\displaystyle 1/2\tan(\pi /2n)} 515:{\displaystyle 1/2\sin(\pi /2n)} 1517:Acta Universitatis Szegediensis 1353:Journal of Combinatorial Theory 272:, and a Reinhardt polygon with 1084: 1078: 1045: 1039: 961:, then the number of distinct 921:-sided Reinhardt polygons. If 571: 554: 509: 492: 1: 1571:10.1016/S0304-0208(08)72828-7 312:-sided Reuleaux polygon into 125:, who studied them in 1922. 129:Definition and construction 2198: 1367:10.1016/j.jcta.2011.03.004 93:. Among all polygons with 1419:10.1007/s10711-018-0326-5 412:Dimensions and optimality 1492:Reinhardt, Karl (1922), 723:Symmetry and enumeration 524:curves of constant width 143:curves of constant width 1464:10.1023/A:1004997002327 791:{\displaystyle 2\pi /d} 1555: 1319:Biggest little polygon 1163: 1138: 1115: 1091: 1062: 975: 955: 935: 915: 895: 872: 852: 830:, or the product of a 820: 792: 761: 741: 708: 688: 665: 645: 622: 602: 578: 516: 462: 442: 441:{\displaystyle \pi /n} 402: 382: 358: 334: 306: 286: 266: 239: 211: 191: 167: 107: 83: 63: 26: 1593:Archiv der Mathematik 1556: 1164: 1139: 1116: 1092: 1063: 976: 956: 936: 916: 896: 873: 853: 821: 793: 762: 742: 709: 689: 666: 646: 623: 603: 579: 517: 463: 443: 403: 383: 359: 335: 307: 287: 267: 240: 212: 192: 168: 108: 84: 64: 24: 1885:Nonagon/Enneagon (9) 1815:Tangential trapezoid 1545: 1153: 1128: 1105: 1090:{\displaystyle o(1)} 1072: 985: 965: 945: 925: 905: 885: 862: 842: 810: 771: 751: 731: 698: 678: 655: 635: 612: 592: 534: 472: 452: 424: 392: 372: 348: 316: 296: 276: 256: 229: 201: 181: 157: 97: 73: 53: 1997:Megagon (1,000,000) 1765:Isosceles trapezoid 1452:Geometriae Dedicata 1396:Geometriae Dedicata 418:isosceles triangles 333:{\displaystyle n/d} 141:. These shapes are 35:equilateral polygon 1967:Icositetragon (24) 1605:10.1007/PL00000413 1551: 1159: 1134: 1111: 1087: 1058: 971: 951: 931: 911: 891: 868: 848: 816: 788: 757: 737: 704: 684: 661: 641: 618: 598: 574: 512: 458: 438: 398: 378: 354: 330: 302: 282: 262: 235: 207: 187: 163: 103: 91:not a power of two 79: 59: 27: 2182:Types of polygons 2169: 2168: 2010: 2009: 1987:Myriagon (10,000) 1972:Triacontagon (30) 1936:Heptadecagon (17) 1926:Pentadecagon (15) 1921:Tetradecagon (14) 1860:Quadrilateral (4) 1730:Antiparallelogram 1554:{\displaystyle n} 1310: 1309: 1162:{\displaystyle n} 1137:{\displaystyle n} 1114:{\displaystyle n} 1099:little O notation 1021: 974:{\displaystyle n} 954:{\displaystyle n} 934:{\displaystyle p} 914:{\displaystyle n} 894:{\displaystyle n} 871:{\displaystyle n} 851:{\displaystyle n} 819:{\displaystyle n} 760:{\displaystyle d} 740:{\displaystyle n} 707:{\displaystyle n} 687:{\displaystyle n} 664:{\displaystyle n} 644:{\displaystyle n} 621:{\displaystyle n} 601:{\displaystyle n} 461:{\displaystyle n} 401:{\displaystyle n} 381:{\displaystyle n} 357:{\displaystyle n} 305:{\displaystyle d} 285:{\displaystyle n} 265:{\displaystyle d} 249:must have an odd 238:{\displaystyle n} 210:{\displaystyle n} 190:{\displaystyle n} 166:{\displaystyle n} 139:Reuleaux triangle 106:{\displaystyle n} 82:{\displaystyle n} 62:{\displaystyle n} 31:Reinhardt polygon 2189: 1982:Chiliagon (1000) 1962:Icositrigon (23) 1941:Octadecagon (18) 1931:Hexadecagon (16) 1835: 1654: 1647: 1640: 1631: 1624: 1623: 1588: 1582: 1581: 1560: 1558: 1557: 1552: 1538: 1532: 1531: 1512: 1506: 1505: 1489: 1483: 1482: 1447: 1438: 1437: 1412: 1390: 1379: 1378: 1369: 1360:(6): 1801–1815, 1347: 1168: 1166: 1165: 1160: 1147: 1143: 1141: 1140: 1135: 1120: 1118: 1117: 1112: 1096: 1094: 1093: 1088: 1067: 1065: 1064: 1059: 1054: 1053: 1029: 1028: 1022: 1020: 1012: 1011: 1010: 1006: 989: 980: 978: 977: 972: 960: 958: 957: 952: 940: 938: 937: 932: 920: 918: 917: 912: 900: 898: 897: 892: 877: 875: 874: 869: 857: 855: 854: 849: 825: 823: 822: 817: 797: 795: 794: 789: 784: 766: 764: 763: 758: 746: 744: 743: 738: 713: 711: 710: 705: 693: 691: 690: 685: 670: 668: 667: 662: 650: 648: 647: 642: 627: 625: 624: 619: 607: 605: 604: 599: 583: 581: 580: 575: 564: 544: 528:supporting lines 521: 519: 518: 513: 502: 482: 467: 465: 464: 459: 447: 445: 444: 439: 434: 407: 405: 404: 399: 387: 385: 384: 379: 363: 361: 360: 355: 339: 337: 336: 331: 326: 311: 309: 308: 303: 291: 289: 288: 283: 271: 269: 268: 263: 244: 242: 241: 236: 216: 214: 213: 208: 196: 194: 193: 188: 172: 170: 169: 164: 135:Reuleaux polygon 112: 110: 109: 104: 88: 86: 85: 80: 68: 66: 65: 60: 43:regular polygons 39:Reuleaux polygon 2197: 2196: 2192: 2191: 2190: 2188: 2187: 2186: 2172: 2171: 2170: 2165: 2064: 2018: 2006: 1950: 1916:Tridecagon (13) 1906:Hendecagon (11) 1894: 1830: 1824: 1795:Right trapezoid 1716: 1668: 1658: 1628: 1627: 1590: 1589: 1585: 1543: 1542: 1540: 1539: 1535: 1514: 1513: 1509: 1491: 1490: 1486: 1449: 1448: 1441: 1392: 1391: 1382: 1349: 1348: 1333: 1328: 1315: 1151: 1150: 1126: 1125: 1103: 1102: 1070: 1069: 1013: 994: 990: 983: 982: 963: 962: 943: 942: 923: 922: 903: 902: 883: 882: 860: 859: 840: 839: 808: 807: 769: 768: 749: 748: 729: 728: 725: 696: 695: 676: 675: 653: 652: 633: 632: 610: 609: 590: 589: 532: 531: 470: 469: 450: 449: 422: 421: 414: 390: 389: 370: 369: 346: 345: 314: 313: 294: 293: 274: 273: 254: 253: 227: 226: 223:regular polygon 199: 198: 179: 178: 155: 154: 131: 95: 94: 71: 70: 51: 50: 37:inscribed in a 29:In geometry, a 17: 12: 11: 5: 2195: 2193: 2185: 2184: 2174: 2173: 2167: 2166: 2164: 2163: 2158: 2153: 2148: 2143: 2138: 2133: 2128: 2123: 2121:Pseudotriangle 2118: 2113: 2108: 2103: 2098: 2093: 2088: 2083: 2078: 2072: 2070: 2066: 2065: 2063: 2062: 2057: 2052: 2047: 2042: 2037: 2032: 2027: 2021: 2019: 2012: 2011: 2008: 2007: 2005: 2004: 1999: 1994: 1989: 1984: 1979: 1974: 1969: 1964: 1958: 1956: 1952: 1951: 1949: 1948: 1943: 1938: 1933: 1928: 1923: 1918: 1913: 1911:Dodecagon (12) 1908: 1902: 1900: 1896: 1895: 1893: 1892: 1887: 1882: 1877: 1872: 1867: 1862: 1857: 1852: 1847: 1841: 1839: 1832: 1826: 1825: 1823: 1822: 1817: 1812: 1807: 1802: 1797: 1792: 1787: 1782: 1777: 1772: 1767: 1762: 1757: 1752: 1747: 1742: 1737: 1732: 1726: 1724: 1722:Quadrilaterals 1718: 1717: 1715: 1714: 1709: 1704: 1699: 1694: 1689: 1684: 1678: 1676: 1670: 1669: 1659: 1657: 1656: 1649: 1642: 1634: 1626: 1625: 1583: 1550: 1533: 1507: 1484: 1439: 1380: 1330: 1329: 1327: 1324: 1323: 1322: 1314: 1311: 1308: 1307: 1304: 1301: 1298: 1295: 1292: 1289: 1286: 1283: 1280: 1277: 1274: 1271: 1268: 1265: 1262: 1259: 1256: 1253: 1250: 1247: 1244: 1241: 1237: 1236: 1233: 1230: 1227: 1224: 1221: 1218: 1215: 1212: 1209: 1206: 1203: 1200: 1197: 1194: 1191: 1188: 1185: 1182: 1179: 1176: 1173: 1170: 1158: 1133: 1110: 1086: 1083: 1080: 1077: 1057: 1052: 1047: 1044: 1041: 1038: 1035: 1032: 1027: 1019: 1016: 1009: 1005: 1001: 997: 993: 970: 950: 930: 910: 890: 867: 847: 815: 787: 783: 779: 776: 756: 736: 724: 721: 716: 715: 703: 683: 672: 660: 640: 629: 617: 597: 573: 570: 567: 563: 559: 556: 553: 550: 547: 543: 539: 511: 508: 505: 501: 497: 494: 491: 488: 485: 481: 477: 457: 437: 433: 429: 413: 410: 397: 377: 353: 342:polite numbers 329: 325: 321: 301: 281: 261: 247:natural number 234: 206: 186: 162: 130: 127: 123:Karl Reinhardt 102: 78: 58: 15: 13: 10: 9: 6: 4: 3: 2: 2194: 2183: 2180: 2179: 2177: 2162: 2161:Weakly simple 2159: 2157: 2154: 2152: 2149: 2147: 2144: 2142: 2139: 2137: 2134: 2132: 2129: 2127: 2124: 2122: 2119: 2117: 2114: 2112: 2109: 2107: 2104: 2102: 2101:Infinite skew 2099: 2097: 2094: 2092: 2089: 2087: 2084: 2082: 2079: 2077: 2074: 2073: 2071: 2067: 2061: 2058: 2056: 2053: 2051: 2048: 2046: 2043: 2041: 2038: 2036: 2033: 2031: 2028: 2026: 2023: 2022: 2020: 2017: 2016:Star polygons 2013: 2003: 2002:Apeirogon (∞) 2000: 1998: 1995: 1993: 1990: 1988: 1985: 1983: 1980: 1978: 1975: 1973: 1970: 1968: 1965: 1963: 1960: 1959: 1957: 1953: 1947: 1946:Icosagon (20) 1944: 1942: 1939: 1937: 1934: 1932: 1929: 1927: 1924: 1922: 1919: 1917: 1914: 1912: 1909: 1907: 1904: 1903: 1901: 1897: 1891: 1888: 1886: 1883: 1881: 1878: 1876: 1873: 1871: 1868: 1866: 1863: 1861: 1858: 1856: 1853: 1851: 1848: 1846: 1843: 1842: 1840: 1836: 1833: 1827: 1821: 1818: 1816: 1813: 1811: 1808: 1806: 1803: 1801: 1798: 1796: 1793: 1791: 1788: 1786: 1783: 1781: 1780:Parallelogram 1778: 1776: 1775:Orthodiagonal 1773: 1771: 1768: 1766: 1763: 1761: 1758: 1756: 1755:Ex-tangential 1753: 1751: 1748: 1746: 1743: 1741: 1738: 1736: 1733: 1731: 1728: 1727: 1725: 1723: 1719: 1713: 1710: 1708: 1705: 1703: 1700: 1698: 1695: 1693: 1690: 1688: 1685: 1683: 1680: 1679: 1677: 1675: 1671: 1666: 1662: 1655: 1650: 1648: 1643: 1641: 1636: 1635: 1632: 1622: 1618: 1614: 1610: 1606: 1602: 1598: 1594: 1587: 1584: 1580: 1576: 1572: 1568: 1564: 1548: 1537: 1534: 1530: 1526: 1522: 1518: 1511: 1508: 1503: 1499: 1495: 1488: 1485: 1481: 1477: 1473: 1469: 1465: 1461: 1457: 1453: 1446: 1444: 1440: 1436: 1432: 1428: 1424: 1420: 1416: 1411: 1406: 1402: 1398: 1397: 1389: 1387: 1385: 1381: 1377: 1373: 1368: 1363: 1359: 1355: 1354: 1346: 1344: 1342: 1340: 1338: 1336: 1332: 1325: 1320: 1317: 1316: 1312: 1305: 1302: 1299: 1296: 1293: 1290: 1287: 1284: 1281: 1278: 1275: 1272: 1269: 1266: 1263: 1260: 1257: 1254: 1251: 1248: 1245: 1242: 1239: 1238: 1234: 1231: 1228: 1225: 1222: 1219: 1216: 1213: 1210: 1207: 1204: 1201: 1198: 1195: 1192: 1189: 1186: 1183: 1180: 1177: 1174: 1171: 1156: 1149: 1148: 1145: 1131: 1122: 1108: 1100: 1081: 1075: 1055: 1042: 1036: 1033: 1030: 1017: 1014: 1007: 1003: 999: 995: 991: 968: 948: 928: 908: 888: 879: 865: 845: 837: 833: 829: 813: 805: 801: 785: 781: 777: 774: 754: 734: 722: 720: 701: 681: 673: 658: 638: 630: 615: 595: 587: 586: 585: 568: 565: 561: 557: 551: 548: 545: 541: 537: 529: 525: 506: 503: 499: 495: 489: 486: 483: 479: 475: 455: 435: 431: 427: 419: 411: 409: 395: 375: 367: 351: 343: 327: 323: 319: 299: 279: 259: 252: 248: 232: 224: 220: 204: 184: 176: 160: 151: 148: 144: 140: 136: 128: 126: 124: 120: 116: 100: 92: 76: 56: 48: 44: 40: 36: 32: 23: 19: 2135: 1955:>20 sides 1890:Decagon (10) 1875:Heptagon (7) 1865:Pentagon (5) 1855:Triangle (3) 1750:Equidiagonal 1599:(1): 75–80, 1596: 1592: 1586: 1562: 1536: 1520: 1516: 1510: 1501: 1497: 1487: 1458:(1): 55–68, 1455: 1451: 1400: 1394: 1357: 1356:, Series A, 1351: 1123: 880: 834:with an odd 832:power of two 803: 799: 726: 717: 415: 366:prime number 175:power of two 152: 132: 41:. As in the 30: 28: 18: 2151:Star-shaped 2126:Rectilinear 2096:Equilateral 2091:Equiangular 2055:Hendecagram 1899:11–20 sides 1880:Octagon (8) 1870:Hexagon (6) 1845:Monogon (1) 1687:Equilateral 1523:: 136–142, 838:, then all 836:prime power 221:, then the 147:convex hull 2156:Tangential 2060:Dodecagram 1838:1–10 sides 1829:By number 1810:Tangential 1790:Right kite 1326:References 1097:term uses 1068:where the 364:is an odd 219:odd number 197:sides. If 2136:Reinhardt 2045:Enneagram 2035:Heptagram 2025:Pentagram 1992:65537-gon 1850:Digon (2) 1820:Trapezoid 1785:Rectangle 1735:Bicentric 1697:Isosceles 1674:Triangles 1621:123299791 1504:: 251–270 1480:118797507 1435:119629098 1410:1405.5233 881:For each 828:semiprime 778:π 558:π 552:⁡ 496:π 490:⁡ 428:π 115:perimeter 2176:Category 2111:Isotoxal 2106:Isogonal 2050:Decagram 2040:Octagram 2030:Hexagram 1831:of sides 1760:Harmonic 1661:Polygons 1403:: 1–18, 1313:See also 804:sporadic 800:periodic 47:diameter 2131:Regular 2076:Concave 2069:Classes 1977:257-gon 1800:Rhombus 1740:Crossed 1613:1728365 1579:0791034 1529:0038087 1472:1432534 1427:3933447 1376:2793611 251:divisor 2141:Simple 2086:Cyclic 2081:Convex 1805:Square 1745:Cyclic 1707:Obtuse 1702:Kepler 1619:  1611:  1577:  1527:  1478:  1470:  1433:  1425:  1374:  522:. The 217:is an 33:is an 2116:Magic 1712:Right 1692:Ideal 1682:Acute 1617:S2CID 1476:S2CID 1431:S2CID 1405:arXiv 826:is a 806:. If 225:with 173:is a 119:width 2146:Skew 1770:Kite 1665:List 727:The 1601:doi 1567:doi 1460:doi 1415:doi 1401:198 1362:doi 1358:118 1306:12 1235:24 549:tan 487:sin 153:If 89:is 2178:: 1615:, 1609:MR 1607:, 1597:74 1595:, 1575:MR 1573:, 1525:MR 1521:12 1519:, 1502:31 1500:, 1496:, 1474:, 1468:MR 1466:, 1456:64 1454:, 1442:^ 1429:, 1423:MR 1421:, 1413:, 1399:, 1383:^ 1372:MR 1370:, 1334:^ 1297:10 1240:#: 1232:23 1229:22 1226:21 1223:20 1220:19 1217:18 1214:17 1211:16 1208:15 1205:14 1202:13 1199:12 1196:11 1193:10 133:A 1667:) 1663:( 1653:e 1646:t 1639:v 1603:: 1569:: 1549:n 1462:: 1417:: 1407:: 1364:: 1303:1 1300:1 1294:2 1291:1 1288:5 1285:1 1282:0 1279:5 1276:1 1273:1 1270:2 1267:1 1264:1 1261:2 1258:0 1255:1 1252:1 1249:1 1246:0 1243:1 1190:9 1187:8 1184:7 1181:6 1178:5 1175:4 1172:3 1169:: 1157:n 1132:n 1109:n 1085:) 1082:1 1079:( 1076:o 1056:, 1051:) 1046:) 1043:1 1040:( 1037:o 1034:+ 1031:1 1026:( 1018:n 1015:4 1008:p 1004:/ 1000:n 996:2 992:p 969:n 949:n 929:p 909:n 889:n 866:n 846:n 814:n 786:d 782:/ 775:2 755:d 735:n 702:n 682:n 659:n 639:n 616:n 596:n 572:) 569:n 566:2 562:/ 555:( 546:2 542:/ 538:1 510:) 507:n 504:2 500:/ 493:( 484:2 480:/ 476:1 456:n 436:n 432:/ 396:n 376:n 352:n 328:d 324:/ 320:n 300:d 280:n 260:d 233:n 205:n 185:n 161:n 101:n 77:n 57:n

Index


equilateral polygon
Reuleaux polygon
regular polygons
diameter
not a power of two
perimeter
width
Karl Reinhardt
Reuleaux polygon
Reuleaux triangle
curves of constant width
convex hull
power of two
odd number
regular polygon
natural number
divisor
polite numbers
prime number
isosceles triangles
curves of constant width
supporting lines
semiprime
power of two
prime power
little O notation
Biggest little polygon

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