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:Articles for deletion/Tangent between two circles - Knowledge

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340:. What there is in the article is not great. The C++ code has to go, sources are needed, the title and some of the text is confusing or unclear, and a rename is certainly in order, perhaps even a redirect and merge. However, I don't see any argument for deletion beyond "it is kind of minor". We have lots of stubs like that. The fact that a pair of circles have four bitangents is notable enough, and the connection with the center of homothety is significant and sourced. I reckon if this were a well written ten line stub, instead of its current state, then no one would have batted an eyelid. 399: 601:? The first part of the article doesn't make much sense to me: instead of stating a/the problem it just throws some equations in there. The article could perhaps be rewritten to deal with the more general tangency problem of Apollonius (from the 2nd reference), in which case it won't be not the same (in general) as finding the 320:
While the topic may just about be notable enough for discussion somewhere, this article doesn't make sense. It talks about 2 "points of tangency", when I can see eight points in the diagram which have a line tangent to the circle at them, and I don't see the point of including C++ code for a simple
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is not a good merge, since it involves other aspects of geometry and other engineering considerations for real-life belts and pulleys.) However, the fact that even the mathematicians here couldn't find
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and redirect this article to b.pr. That the belt problem is about engineering (and additional facets) does not, IMO, preclude putting the mathematics underlying the problem there.
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this article as a less technical version, and one that is not diluted with polygons. I recognize that the article is very bad at the moment, but I for one am willing to help
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This topic is a very important topic and is very important in the solving of advanced geometrical problems. Therefore I think it should be kept and added to. --
92: 75: 660:, per all the changes made by Willow. The article is now much broader, far more clearly notable, and in general drastically improved. Amazing job! 564:
OK, I've seeded a smattering of content there. Perhaps some of you would like to pitch in? I'm sure it'd be fun and easy, especially for
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This seems to me to be a very minor bit of geometry and I am not certain that it warrants its own article. However this is only a
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editor acting in good faith is involved. With luck, Willow's kindness has not only saved an article, but retained a contributor.
79: 17: 669: 651: 634: 612: 585: 555: 488: 462: 439: 420: 402: 371: 360: 346: 330: 308: 287: 263: 241: 216: 198: 183: 158: 57: 71: 63: 624:. Can I remind fellow editors that we don't delete articles because their content is a mess. Particular not where an 683: 484: 458: 36: 682:
Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a
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Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a
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The following discussion is an archived debate of the proposed deletion of the article below.
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First of all, this article is trivial and fails to be encyclopedic. It also fails to satisfy
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I think the topic is at most marginally notable, but I am prepared to change my mind. --
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to make it better. Comments and contributions from other people are always welcome.
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I don't think the current content is sufficiently encyclopedic to be worth saving. —
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geometrical articles, but not to contribute to them, or even to comment on them at
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Title changed and article substantially improved. I've updated my !vote below.
322: 568:. :) Rabi and I were Talking, and we decided to change the article's name to 169: 572:, which you might prefer. I have to run off now, but I left you all an 411:, as Gandalf noted. How would people feel about a merge and a redirect? 576:
there! Go in peace and delete no more — wait, is that how it goes? ;)
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It's depressing to see how many smart mathematicians can find time to
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is about one application of that concept and several other concepts (
521:. Yes, this is a minor topic, and yes, it's a retread of parts of 505:. I think I can comment here with some authority, since I've been 620:. This article has been transformed thanks to the intervention of 676:
The above discussion is preserved as an archive of the debate.
433:, arclength of a circle etc.) to solve an engineering problem. 507:
working actively on numerous topics in basic circle geometry
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Not convinced. This article is about a concept in geometry.
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after significant improvements since the start of the AfD. —
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I think if kept the title may need to be changed as well.
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See Gandalf61's comment below for a better merge target. —
168:. If merged, a possible appropriate merge target would be 116: 105: 101: 97: 597:: How is this problem different from finding the 39:). No further edits should be made to this page. 686:). No further edits should be made to this page. 137:--I'd like to hear what the community thinks. 8: 44:The result was the nomination was 7: 407:It appears this is quite similar to 24: 397: 145:) 08:05, 27 September 2008 (UTC) 18:Knowledge:Articles for deletion 670:21:54, 30 September 2008 (UTC) 652:20:10, 30 September 2008 (UTC) 635:19:53, 30 September 2008 (UTC) 613:13:23, 30 September 2008 (UTC) 586:17:42, 30 September 2008 (UTC) 556:11:27, 30 September 2008 (UTC) 489:10:57, 30 September 2008 (UTC) 463:13:44, 30 September 2008 (UTC) 440:07:52, 30 September 2008 (UTC) 421:06:30, 30 September 2008 (UTC) 403:01:58, 30 September 2008 (UTC) 372:19:53, 30 September 2008 (UTC) 361:21:56, 29 September 2008 (UTC) 347:21:28, 29 September 2008 (UTC) 331:14:52, 29 September 2008 (UTC) 309:18:50, 30 September 2008 (UTC) 288:14:19, 29 September 2008 (UTC) 264:10:25, 29 September 2008 (UTC) 242:13:20, 28 September 2008 (UTC) 217:17:49, 30 September 2008 (UTC) 199:14:55, 28 September 2008 (UTC) 184:05:52, 28 September 2008 (UTC) 159:21:55, 30 September 2008 (UTC) 58:23:24, 30 September 2008 (UTC) 1: 538:tells me that it's wise to 72:Tangent between two circles 64:Tangent between two circles 703: 679:Please do not modify it. 570:Tangent lines to circles 250:This AfD nomination was 32:Please do not modify it. 148:Nomination withdrawn. 658:Nomination Withdrawn 642:per "Geometry guy". 254:. It is listed now. 595:Question/suggestion 603:homothetic center 599:homothetic center 536:homothetic center 525:. (I agree with 523:homothetic center 431:similar triangles 395: 694: 681: 515:power of a point 401: 388: 119: 113: 95: 34: 702: 701: 697: 696: 695: 693: 692: 691: 690: 684:deletion review 677: 481:Topology Expert 455:Jakob.scholbach 321:calculation. -- 115: 86: 70: 67: 37:deletion review 30: 22: 21: 20: 12: 11: 5: 700: 698: 689: 688: 655: 654: 637: 615: 591: 590: 589: 588: 559: 558: 492: 469: 468: 467: 466: 465: 443: 442: 378: 377: 376: 375: 374: 334: 333: 314: 313: 312: 311: 291: 290: 269: 268: 267: 266: 245: 244: 223: 222: 221: 220: 219: 209:David Eppstein 191:David Eppstein 176:David Eppstein 128: 127: 66: 61: 42: 41: 25: 23: 15: 14: 13: 10: 9: 6: 4: 3: 2: 699: 687: 685: 680: 674: 673: 672: 671: 667: 663: 659: 653: 649: 645: 644:Michael Hardy 641: 638: 636: 633: 632: 627: 626:inexperienced 623: 619: 616: 614: 611: 608: 604: 600: 596: 593: 592: 587: 583: 579: 575: 571: 567: 563: 562: 561: 560: 557: 553: 549: 545: 541: 537: 532: 528: 524: 520: 516: 512: 511:Steiner chain 508: 504: 500: 496: 493: 491: 490: 486: 482: 477: 473: 470: 464: 460: 456: 452: 448: 445: 444: 441: 438: 437: 432: 428: 424: 423: 422: 418: 414: 410: 406: 405: 404: 400: 394: 391: 386: 382: 379: 373: 370: 369: 364: 363: 362: 358: 354: 350: 349: 348: 345: 344: 339: 336: 335: 332: 328: 324: 319: 316: 315: 310: 306: 302: 298: 295: 294: 293: 292: 289: 285: 281: 277: 275: 271: 270: 265: 261: 257: 253: 249: 248: 247: 246: 243: 239: 235: 231: 227: 224: 218: 214: 210: 206: 203: 202: 201: 200: 196: 192: 187: 186: 185: 181: 177: 173: 171: 167: 163: 162: 161: 160: 156: 152: 149: 146: 144: 140: 136: 130: 126: 123: 118: 111: 107: 103: 99: 94: 90: 85: 81: 77: 73: 69: 68: 65: 62: 60: 59: 55: 51: 47: 40: 38: 33: 27: 26: 19: 678: 675: 662:TallNapoleon 657: 656: 639: 631:Geometry guy 629: 617: 594: 565: 539: 531:belt problem 519:radical axis 498: 494: 479: 471: 451:belt problem 446: 436:Geometry guy 434: 427:Belt problem 413:TallNapoleon 409:Belt problem 385:electricRush 380: 368:Geometry guy 366: 353:TallNapoleon 343:Geometry guy 341: 337: 317: 296: 273: 272: 230:belt problem 225: 204: 188: 165: 164: 151:TallNapoleon 147: 139:TallNapoleon 134: 132: 131: 129: 125: 45: 43: 31: 28: 618:Speedy keep 274:Weak delete 135:weak delete 574:Easter egg 544:Rabi Javed 509:, such as 301:Hans Adler 280:Hans Adler 252:incomplete 50:Malcolmxl5 338:Weak keep 297:Weak keep 276:or merge. 234:Gandalf61 170:bitangent 46:withdrawn 122:View log 256:DumbBOT 89:protect 84:history 622:Willow 578:Willow 548:Willow 517:, and 499:delete 472:Delete 318:Delete 166:Delete 117:delete 93:delete 529:that 527:G-guy 449:with 447:Merge 323:Tango 228:with 226:Merge 172:, but 120:) – ( 110:views 102:watch 98:links 16:< 666:talk 648:talk 640:Keep 582:talk 552:talk 540:keep 495:Keep 485:talk 476:WP:N 459:talk 417:talk 381:Keep 357:talk 327:talk 305:talk 284:talk 260:talk 238:talk 213:talk 205:Keep 195:talk 180:talk 155:talk 143:talk 106:logs 80:talk 76:edit 54:talk 48:. -- 566:you 503:FAC 668:) 650:) 607:VG 605:. 584:) 554:) 513:, 487:) 478:. 461:) 419:) 396:) 359:) 329:) 307:) 286:) 262:) 240:) 232:. 215:) 197:) 182:) 157:) 108:| 104:| 100:| 96:| 91:| 87:| 82:| 78:| 56:) 664:( 646:( 610:☎ 580:( 550:( 483:( 457:( 415:( 393:C 390:T 387:( 355:( 325:( 303:( 282:( 258:( 236:( 211:( 193:( 178:( 153:( 141:( 124:) 114:( 112:) 74:( 52:(

Index

Knowledge:Articles for deletion
deletion review
Malcolmxl5
talk
23:24, 30 September 2008 (UTC)
Tangent between two circles
Tangent between two circles
edit
talk
history
protect
delete
links
watch
logs
views
delete
View log
TallNapoleon
talk
TallNapoleon
talk
21:55, 30 September 2008 (UTC)
bitangent
David Eppstein
talk
05:52, 28 September 2008 (UTC)
David Eppstein
talk
14:55, 28 September 2008 (UTC)

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