Knowledge (XXG)

Pentakis icosidodecahedron

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applied to the pentagonal faces. In this construction, all the vertices are assumed to be the same distance from the center, while in general icosahedral symmetry can be maintained even with the 12 order-5 vertices at a different distance from the center as the other 30.
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of the icosidodecahedron, can be obtained by raising low pyramids on each equilateral triangular face on a pentakis icosidodecahedron. It has 120 isosceles triangle faces (2 types), 180 edges (3 types) and 62 vertices (3
245:, dividing each triangular face into 4 triangles by adding mid-edge vertices. From this construction, all 80 triangles will be equilateral, but faces will be 502: 483: 456: 116: 534: 374: 518: 475: 255: 234: 104: 408: 420: 317: 218: 145: 400: 337: 121: 90: 58: 514: 189: 39: 170: 444: 378: 62: 498: 479: 452: 323: 301: 283: 230: 206: 194: 80: 467: 387: 162: 28: 493: 489: 210: 202: 198: 155: 140: 70: 47: 432: 276: 528: 344:
which has 60 isosceles triangle faces, 90 edges (2 types), and 32 vertices (2 types).
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Chapter 21: Naming the Archimedean and Catalan polyhedra and Tilings (p 284)
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It represents the exterior envelope of a vertex-centered
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Its name comes from a topological construction from the
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looks like a pentakis icosidodecahedron with inverted
161: 151: 139: 115: 103: 89: 79: 69: 46: 35: 21: 241:It can also be topologically constructed from the 8: 437:Sculpture based on Propellorized Polyhedra 169: 27: 447:, Heidi Burgiel, Chaim Goodman-Strauss, 392:3D model of a pentakis icosidodecahedron 385: 251: 313: 18: 7: 356:Tripentakis icosidodecahedron, the 14: 381:meeting at the polyhedron center. 215:truncated rhombic triacontahedron 16:Geodesic polyhedron with 80 faces 366: 349: 330: 316: 282: 275: 1: 289: 375:small icosihemidodecahedron 551: 519:Conway polyhedron notation 476:Cambridge University Press 409:convex regular 4-polytopes 396:]]== Related polytopes == 185:pentakis icosidodecahedron 22:Pentakis icosidodecahedron 515:VTML polyhedral generator 168: 26: 449:The Symmetries of Things 294:2-frequency subdivided 421:Tetrakis cuboctahedron 393: 340:is a slightly smaller 219:chamfered dodecahedron 190:subdivided icosahedron 146:Chamfered dodecahedron 411:, into 3 dimensions. 401:orthogonal projection 391: 338:Pentakis dodecahedron 91:Vertex configuration 379:pentagonal pyramids 197:with 80 triangular 40:Geodesic polyhedron 535:Geodesic polyhedra 394: 503:978-0-486-40921-4 485:978-0-521-29432-4 468:Wenninger, Magnus 457:978-1-56881-220-5 324:Icosidodecahedron 310:Related polyhedra 307: 306: 302:icosidodecahedron 231:icosidodecahedron 195:convex polyhedron 177: 176: 542: 496: 472:Spherical Models 390: 370: 353: 334: 320: 286: 279: 252: 173: 134: 111: 99: 31: 19: 550: 549: 545: 544: 543: 541: 540: 539: 525: 524: 511: 486: 466: 429: 417: 386: 382: 371: 362: 354: 345: 335: 326: 321: 312: 263: 227: 141:Dual polyhedron 133: 125: 110:k5aD = dcD = uI 109: 105:Conway notation 97: 95: 56: 17: 12: 11: 5: 548: 546: 538: 537: 527: 526: 523: 522: 510: 509:External links 507: 506: 505: 484: 464: 463: 462: 445:John H. Conway 442: 433:George W. Hart 428: 425: 424: 423: 416: 413: 384: 383: 373:The nonconvex 372: 365: 363: 355: 348: 346: 336: 329: 327: 322: 315: 311: 308: 305: 304: 298: 292: 288: 287: 280: 273: 269: 268: 265: 261: 258: 226: 223: 175: 174: 166: 165: 159: 158: 153: 149: 148: 143: 137: 136: 129: 119: 117:Symmetry group 113: 112: 107: 101: 100: 93: 87: 86: 83: 77: 76: 73: 67: 66: 50: 44: 43: 37: 33: 32: 24: 23: 15: 13: 10: 9: 6: 4: 3: 2: 547: 536: 533: 532: 530: 520: 516: 513: 512: 508: 504: 500: 495: 491: 487: 481: 477: 473: 469: 465: 460: 459: 458: 454: 450: 446: 443: 441: 438: 434: 431: 430: 426: 422: 419: 418: 414: 412: 410: 407:, one of six 406: 402: 397: 389: 380: 376: 369: 364: 359: 352: 347: 343: 342:Catalan solid 339: 333: 328: 325: 319: 314: 309: 303: 299: 297: 293: 290: 285: 281: 278: 274: 271: 270: 266: 259: 257: 254: 253: 250: 248: 244: 239: 236: 232: 224: 222: 220: 216: 212: 208: 204: 200: 196: 192: 191: 186: 182: 172: 167: 164: 160: 157: 154: 150: 147: 144: 142: 138: 132: 128: 123: 120: 118: 114: 108: 106: 102: 94: 92: 88: 84: 82: 78: 75:120 (2 types) 74: 72: 68: 64: 60: 55: 51: 49: 45: 41: 38: 34: 30: 25: 20: 517:Try "k5aD" ( 471: 448: 436: 398: 395: 240: 235:kis operator 228: 225:Construction 214: 188: 184: 178: 130: 126: 85:42 (2 types) 497:Dover 1999 296:icosahedron 243:icosahedron 122:Icosahedral 59:equilateral 427:References 209:. It is a 152:Properties 300:Pentakis 233:with the 205:, and 42 63:isosceles 54:triangles 529:Category 470:(1979), 415:See also 405:600-cell 358:Kleetope 247:coplanar 207:vertices 181:geometry 81:Vertices 494:0552023 403:of the 361:types). 267:(k5)aI 213:of the 501:  492:  482:  455:  451:2008, 272:Image 256:Conway 201:, 120 183:, the 156:convex 98:(30) 3 96:(12) 3 291:Form 203:edges 199:faces 193:is a 71:Edges 61:; 60 48:Faces 42:(2,0) 499:ISBN 480:ISBN 453:ISBN 211:dual 57:(20 36:Type 221:). 187:or 179:In 163:Net 52:80 531:: 490:MR 488:, 478:, 474:, 435:, 264:)I 260:(u 249:. 521:) 262:2 217:( 135:) 131:h 127:I 124:( 65:)

Index


Geodesic polyhedron
Faces
triangles
equilateral
isosceles
Edges
Vertices
Vertex configuration
Conway notation
Symmetry group
Icosahedral
Dual polyhedron
Chamfered dodecahedron
convex
Net

geometry
subdivided icosahedron
convex polyhedron
faces
edges
vertices
dual
chamfered dodecahedron
icosidodecahedron
kis operator
icosahedron
coplanar
Conway

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