| quarter circle | 1 1/4 circle | 2 1/4 circle | 3 1/4 circle | 4 1/4 circle | 5 1/4 circle | 6 1/4 circle | 7 1/4 circle | 8 1/4 circle | 9 1/4 circle | 10 1/4 circle | 11 1/4 circle | 12 1/4 circle | 13 1/4 circle | 14 1/4 circle | 15 1/4 circle | 16 1/4 circle | 17 1/4 circle | 18 1/4 circle | 19 1/4 circle | 20 1/4 circle | 21 1/4 circle | 22 1/4 circle | 23 1/4 circle | 24 1/4 circle | 25 1/4 circle | 26 1/4 circle | 27 1/4 circle | 28 1/4 circle | 29 1/4 circle | 30 1/4 circle | 31 1/4 circle | 32 1/4 circle | 33 1/4 circle | 34 1/4 circle | 35 1/4 circle | 36 1/4 circle | 37 1/4 circle | 38 1/4 circle | 39 1/4 circle | 40 1/4 circle | 41 1/4 circle | 42 1/4 circle | 43 1/4 circle | 44 1/4 circle | 45 1/4 circle | 46 1/4 circle | 47 1/4 circle | 48 1/4 circle | 49 1/4 circle | 50 1/4 circle | 51 1/4 circle | 52 1/4 circle | 53 1/4 circle | 54 1/4 circle | 55 1/4 circle | 56 1/4 circle | 57 1/4 circle | 58 1/4 circle | 59 1/4 circle | 60 1/4 circle | 61 1/4 circle | 62 1/4 circle | 63 1/4 circle | 64 1/4 circle | 65 1/4 circle | 66 1/4 circle | 67 1/4 circle | 68 1/4 circle | 69 1/4 circle | 70 1/4 circle | 71 1/4 circle | 72 1/4 circle | 73 1/4 circle | 74 1/4 circle | 75 1/4 circle | 76 1/4 circle | 77 1/4 circle | 78 1/4 circle | 79 1/4 circle | 80 1/4 circle | 81 1/4 circle | 82 1/4 circle | 83 1/4 circle | 84 1/4 circle | 85 1/4 circle | 86 1/4 circle | 87 1/4 circle | 88 1/4 circle | 89 1/4 circle | 90 1/4 circle | 91 1/4 circle | 92 1/4 circle | 93 1/4 circle | 94 1/4 circle | 95 1/4 circle | 96 1/4 circle | 97 1/4 circle | 98 1/4 circle | 99 1/4 circle | 100 1/4 circle |
| sign | 3 sign | 6 sign | 9 sign | 12 sign | 15 sign | 18 sign | 21 sign | 24 sign | 27 sign | 30 sign | 33 sign | 36 sign | 39 sign | 42 sign | 45 sign | 48 sign | 51 sign | 54 sign | 57 sign | 60 sign | 63 sign | 66 sign | 69 sign | 72 sign | 75 sign | 78 sign | 81 sign | 84 sign | 87 sign | 90 sign | 93 sign | 96 sign | 99 sign | 102 sign | 105 sign | 108 sign | 111 sign | 114 sign | 117 sign | 120 sign | 123 sign | 126 sign | 129 sign | 132 sign | 135 sign | 138 sign | 141 sign | 144 sign | 147 sign | 150 sign | 153 sign | 156 sign | 159 sign | 162 sign | 165 sign | 168 sign | 171 sign | 174 sign | 177 sign | 180 sign | 183 sign | 186 sign | 189 sign | 192 sign | 195 sign | 198 sign | 201 sign | 204 sign | 207 sign | 210 sign | 213 sign | 216 sign | 219 sign | 222 sign | 225 sign | 228 sign | 231 sign | 234 sign | 237 sign | 240 sign | 243 sign | 246 sign | 249 sign | 252 sign | 255 sign | 258 sign | 261 sign | 264 sign | 267 sign | 270 sign | 273 sign | 276 sign | 279 sign | 282 sign | 285 sign | 288 sign | 291 sign | 294 sign | 297 sign | 300 sign |
1/4 circle or quarter circle is equal to 360°/4 = 90°. Plural name is quarter circles.
| 1 quarter circles = 3 signs | 6 quarter circles = 18 signs |
| 2 quarter circles = 6 signs | 7 quarter circles = 21 signs |
| 3 quarter circles = 9 signs | 8 quarter circles = 24 signs |
| 4 quarter circles = 12 signs | 9 quarter circles = 27 signs |
| 5 quarter circles = 15 signs | 10 quarter circles = 30 signs |
sign is the unit of plane angle, equals to 30°.
| 1 signs = 0.33333333333333 quarter circles | 6 signs = 2 quarter circles |
| 2 signs = 0.66666666666667 quarter circles | 7 signs = 2.3333333333333 quarter circles |
| 3 signs = 1 quarter circles | 8 signs = 2.6666666666667 quarter circles |
| 4 signs = 1.3333333333333 quarter circles | 9 signs = 3 quarter circles |
| 5 signs = 1.6666666666667 quarter circles | 10 signs = 3.3333333333333 quarter circles |
| 1 quarter circles = 3 signs |
| 1 signs = 0.3333333 quarter circles |