| helf circle | 1 1/2 circle | 2 1/2 circle | 3 1/2 circle | 4 1/2 circle | 5 1/2 circle | 6 1/2 circle | 7 1/2 circle | 8 1/2 circle | 9 1/2 circle | 10 1/2 circle | 11 1/2 circle | 12 1/2 circle | 13 1/2 circle | 14 1/2 circle | 15 1/2 circle | 16 1/2 circle | 17 1/2 circle | 18 1/2 circle | 19 1/2 circle | 20 1/2 circle | 21 1/2 circle | 22 1/2 circle | 23 1/2 circle | 24 1/2 circle | 25 1/2 circle | 26 1/2 circle | 27 1/2 circle | 28 1/2 circle | 29 1/2 circle | 30 1/2 circle | 31 1/2 circle | 32 1/2 circle | 33 1/2 circle | 34 1/2 circle | 35 1/2 circle | 36 1/2 circle | 37 1/2 circle | 38 1/2 circle | 39 1/2 circle | 40 1/2 circle | 41 1/2 circle | 42 1/2 circle | 43 1/2 circle | 44 1/2 circle | 45 1/2 circle | 46 1/2 circle | 47 1/2 circle | 48 1/2 circle | 49 1/2 circle | 50 1/2 circle | 51 1/2 circle | 52 1/2 circle | 53 1/2 circle | 54 1/2 circle | 55 1/2 circle | 56 1/2 circle | 57 1/2 circle | 58 1/2 circle | 59 1/2 circle | 60 1/2 circle | 61 1/2 circle | 62 1/2 circle | 63 1/2 circle | 64 1/2 circle | 65 1/2 circle | 66 1/2 circle | 67 1/2 circle | 68 1/2 circle | 69 1/2 circle | 70 1/2 circle | 71 1/2 circle | 72 1/2 circle | 73 1/2 circle | 74 1/2 circle | 75 1/2 circle | 76 1/2 circle | 77 1/2 circle | 78 1/2 circle | 79 1/2 circle | 80 1/2 circle | 81 1/2 circle | 82 1/2 circle | 83 1/2 circle | 84 1/2 circle | 85 1/2 circle | 86 1/2 circle | 87 1/2 circle | 88 1/2 circle | 89 1/2 circle | 90 1/2 circle | 91 1/2 circle | 92 1/2 circle | 93 1/2 circle | 94 1/2 circle | 95 1/2 circle | 96 1/2 circle | 97 1/2 circle | 98 1/2 circle | 99 1/2 circle | 100 1/2 circle |
| sign | 6 sign | 12 sign | 18 sign | 24 sign | 30 sign | 36 sign | 42 sign | 48 sign | 54 sign | 60 sign | 66 sign | 72 sign | 78 sign | 84 sign | 90 sign | 96 sign | 102 sign | 108 sign | 114 sign | 120 sign | 126 sign | 132 sign | 138 sign | 144 sign | 150 sign | 156 sign | 162 sign | 168 sign | 174 sign | 180 sign | 186 sign | 192 sign | 198 sign | 204 sign | 210 sign | 216 sign | 222 sign | 228 sign | 234 sign | 240 sign | 246 sign | 252 sign | 258 sign | 264 sign | 270 sign | 276 sign | 282 sign | 288 sign | 294 sign | 300 sign | 306 sign | 312 sign | 318 sign | 324 sign | 330 sign | 336 sign | 342 sign | 348 sign | 354 sign | 360 sign | 366 sign | 372 sign | 378 sign | 384 sign | 390 sign | 396 sign | 402 sign | 408 sign | 414 sign | 420 sign | 426 sign | 432 sign | 438 sign | 444 sign | 450 sign | 456 sign | 462 sign | 468 sign | 474 sign | 480 sign | 486 sign | 492 sign | 498 sign | 504 sign | 510 sign | 516 sign | 522 sign | 528 sign | 534 sign | 540 sign | 546 sign | 552 sign | 558 sign | 564 sign | 570 sign | 576 sign | 582 sign | 588 sign | 594 sign | 600 sign |
1/2 circle or half circle is equal to 360°/2 = 180°. Plural name is helf circles.
| 1 helf circles = 6 signs | 6 helf circles = 36 signs |
| 2 helf circles = 12 signs | 7 helf circles = 42 signs |
| 3 helf circles = 18 signs | 8 helf circles = 48 signs |
| 4 helf circles = 24 signs | 9 helf circles = 54 signs |
| 5 helf circles = 30 signs | 10 helf circles = 60 signs |
sign is the unit of plane angle, equals to 30°.
| 1 signs = 0.16666666666667 helf circles | 6 signs = 1 helf circles |
| 2 signs = 0.33333333333333 helf circles | 7 signs = 1.1666666666667 helf circles |
| 3 signs = 0.5 helf circles | 8 signs = 1.3333333333333 helf circles |
| 4 signs = 0.66666666666667 helf circles | 9 signs = 1.5 helf circles |
| 5 signs = 0.83333333333333 helf circles | 10 signs = 1.6666666666667 helf circles |
| 1 helf circles = 6 signs |
| 1 signs = 0.1666667 helf circles |