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First stellation of the rhombic dodecahedron

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146: 36: 53: 334:, together with eight additional vertices (the degree-3 vertices of the rhombic dodecahedron). Escher's solid has six additional vertices, at the center points of the square faces of the cuboctahedron (the degree-4 vertices of the rhombic dodecahedron). In the first stellation of the rhombic dodecahedron, these six points are not vertices, but are instead the midpoints of pairs of edges that cross at right angles at these points. 354: 190:, Escher depicts the polyhedron in a skeletal form, and includes edges that are part of the skeletal form of Escher's solid but are not part of the stellation. (In the stellation, these line segments are formed by crossings of faces rather than edges.) However, an alternative interpretation for the same skeletal form is that it depicts a third shape with a similar appearance, the 136:
faces of the rhombic dodecahedron, with each face containing the rhombus in the same plane, and that it has the same symmetries as the rhombic dodecahedron. It is the first stellation, meaning that no other self-intersecting polyhedron with the same face planes and the same symmetries has smaller
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For polyhedra formed only using faces in the same 12 planes and with the same symmetries, but with the faces allowed to become non-simple or with multiple faces in a single plane, additional possibilities arise. In particular, removing the inner rhombus from each hexagonal face of the stellation
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leaves four triangles, and the resulting system of 48 triangles forms a different non-convex polyhedron without self-intersections that forms the boundary of a solid shape, sometimes called Escher's solid. This shape appears in
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Escher's solid. This image does not depict the stellation, because different visible parts of a single hexagonal face of the stellation have different colors. However, the coloring is consistent with a depiction of the
253: 290: 320: 219: 113: 182:). As the stellation and the solid have the same visual appearance, it is not possible to determine which of the two Escher intended to depict in 137:
faces. Extending the faces outwards even farther in the same planes leads to two more stellations, if the faces are required to be
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of 20 − 36 + 12 = −4. Escher's solid instead has 48 triangular faces, 72 edges, and 26 vertices, yielding an
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The first stellation of the rhombic dodecahedron has 12 hexagonal faces, 36 edges, and 20 vertices, yielding an
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The first stellation of the rhombic dodecahedron has 12 faces, each of which is a non-convex hexagon. It is a
145: 515:"The compound of three octahedra and a remarkable compound of three square dipyramids, the Escher's solid" 59: 601: 258: 17: 35: 342: 338: 201:
The 48 triangular faces of the solid are isosceles; if the longest edge of these triangles is length
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The vertices of the first stellation of the rhombic dodecahedron include the 12 vertices of the
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of the first stellation of the rhombic dodecahedron decomposed into 12 pyramids and 4 half-cubes
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between a cube and two copies of Escher's solid, is closely related to this tessellation.
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and has the same outer shell and the same visual appearance as two other shapes: a solid,
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Geometry, games, graphs and education: the Joe Malkevitch Festschrift
538:"Tessellations from group actions and the mystery of Escher's solid" 461: 143: 448:
Luke, Dorman (1957). "Stellations of the rhombic dodecahedron".
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with 12 faces, each of which is a non-convex hexagon. It is a
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Bridges: Mathematical Connections in Art, Music, and Science
229: 298: 261: 227: 207: 369:. Six solids meet at each vertex. This honeycomb is 314: 284: 247: 213: 58:Escher's solid is topologically equivalent to the 417:"Can every face of a polyhedron have many sides?" 8: 79:first stellation of the rhombic dodecahedron 27:Self I intersecting polyhedron with 12 faces 426:. Comap, Inc., Bedford, MA. pp. 9–26. 567:"First stellation of rhombic dodecahedron" 407: 405: 422:. In Garfunkel, Sol; Nath, Rishi (eds.). 357:Tesselation of space with Escher's solids 306: 297: 276: 265: 260: 228: 226: 206: 367:stellated rhombic dodecahedral honeycomb 352: 248:{\displaystyle {\tfrac {\sqrt {3}}{2}}s} 114:stellated rhombic dodecahedral honeycomb 18:First stellation of rhombic dodecahedron 401: 178:itself features a different shape, the 443: 441: 198:with 24 overlapping triangular faces. 105:with 24 overlapping triangular faces. 7: 255:, the surface area of the solid is 285:{\displaystyle 12{\sqrt {2}}s^{2}} 97:, with 48 triangular faces, and a 25: 51: 34: 292:and the volume of the solid is 120:Stellation, solid, and compound 496:"The Polyhedra of M.C. Escher" 1: 46:of three flattened octahedra. 345:of 26 − 72 + 48 = 2. 180:compound of three octahedra 623: 326:Vertices, edges, and faces 450:The Mathematical Gazette 607:Space-filling polyhedra 536:Mihăilă, Ioana (2005). 221:then the other two are 81:is a self-intersecting 513:Zefiro, Livio (2010). 358: 316: 315:{\displaystyle 4s^{3}} 286: 249: 215: 154: 60:disdyakis dodecahedron 356: 317: 287: 250: 216: 149: 343:Euler characteristic 339:Euler characteristic 296: 259: 225: 205: 130:rhombic dodecahedron 91:rhombic dodecahedron 597:Stellation diagrams 361:Escher's solid can 194:of three flattened 192:polyhedral compound 168:and in a study for 108:Escher's solid can 101:of three flattened 99:polyhedral compound 44:polyhedral compound 564:Weisstein, Eric W. 519:Visual Mathematics 359: 312: 282: 245: 240: 211: 155: 112:space to form the 500:Virtual Polyhedra 390:dissection puzzle 379:vertex-transitive 270: 239: 235: 214:{\displaystyle s} 16:(Redirected from 614: 577: 576: 549: 548: 542: 533: 527: 526: 510: 504: 503: 488: 482: 481: 456:(337): 189–194. 445: 436: 435: 421: 413:Grünbaum, Branko 409: 321: 319: 318: 313: 311: 310: 291: 289: 288: 283: 281: 280: 271: 266: 254: 252: 251: 246: 241: 231: 230: 220: 218: 217: 212: 148: 55: 38: 21: 622: 621: 617: 616: 615: 613: 612: 611: 587: 586: 562: 561: 558: 553: 552: 540: 535: 534: 530: 512: 511: 507: 492:Hart, George W. 490: 489: 485: 462:10.2307/3609190 447: 446: 439: 419: 411: 410: 403: 398: 375:edge-transitive 371:cell-transitive 351: 328: 302: 294: 293: 272: 257: 256: 223: 222: 203: 202: 188:Study for Stars 144: 139:simple polygons 122: 71: 70: 69: 68: 67: 56: 48: 47: 39: 28: 23: 22: 15: 12: 11: 5: 620: 618: 610: 609: 604: 599: 589: 588: 585: 584: 578: 557: 556:External links 554: 551: 550: 528: 505: 483: 437: 400: 399: 397: 394: 386:Yoshimoto Cube 350: 347: 327: 324: 309: 305: 301: 279: 275: 269: 264: 244: 238: 234: 210: 121: 118: 95:Escher's solid 57: 50: 49: 40: 33: 32: 31: 30: 29: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 619: 608: 605: 603: 600: 598: 595: 594: 592: 583: 580:George Hart, 579: 574: 573: 568: 565: 560: 559: 555: 546: 539: 532: 529: 524: 520: 516: 509: 506: 501: 497: 493: 487: 484: 479: 475: 471: 467: 463: 459: 455: 451: 444: 442: 438: 433: 429: 425: 418: 414: 408: 406: 402: 395: 393: 391: 387: 382: 380: 376: 372: 368: 365:space in the 364: 355: 348: 346: 344: 340: 335: 333: 332:cuboctahedron 325: 323: 307: 303: 299: 277: 273: 267: 262: 242: 236: 232: 208: 199: 197: 193: 189: 185: 181: 177: 173: 172: 167: 166: 161: 152: 147: 142: 140: 135: 131: 127: 119: 117: 115: 111: 106: 104: 100: 96: 92: 88: 84: 80: 76: 65: 64:Catalan solid 61: 54: 45: 37: 19: 602:M. C. Escher 570: 544: 531: 522: 518: 508: 499: 486: 453: 449: 423: 383: 366: 360: 349:Tessellation 336: 329: 200: 187: 183: 175: 169: 163: 160:M. C. Escher 156: 123: 107: 94: 78: 72: 582:Stellations 591:Categories 396:References 363:tessellate 174:(although 126:stellation 110:tessellate 87:stellation 83:polyhedron 572:MathWorld 196:octahedra 184:Waterfall 165:Waterfall 162:'s works 151:STL model 103:octahedra 494:(1996). 415:(2008). 75:geometry 478:0097015 470:3609190 432:2512345 134:rhombus 128:of the 89:of the 476:  468:  430:  77:, the 541:(PDF) 466:JSTOR 420:(PDF) 186:. In 176:Stars 171:Stars 388:, a 384:The 377:and 62:, a 458:doi 73:In 593:: 569:. 543:. 523:47 521:. 517:. 498:. 474:MR 472:. 464:. 454:41 452:. 440:^ 428:MR 404:^ 381:. 373:, 322:. 263:12 141:. 116:. 575:. 547:. 525:. 502:. 480:. 460:: 434:. 308:3 304:s 300:4 278:2 274:s 268:2 243:s 237:2 233:3 209:s 20:)

Index

First stellation of rhombic dodecahedron

polyhedral compound

disdyakis dodecahedron
Catalan solid
geometry
polyhedron
stellation
rhombic dodecahedron
polyhedral compound
octahedra
tessellate
stellated rhombic dodecahedral honeycomb
stellation
rhombic dodecahedron
rhombus
simple polygons

STL model
M. C. Escher
Waterfall
Stars
compound of three octahedra
polyhedral compound
octahedra
cuboctahedron
Euler characteristic
Euler characteristic

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