| 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 |
| helf circle | 0.5 1/2 circle | 1 1/2 circle | 1.5 1/2 circle | 2 1/2 circle | 2.5 1/2 circle | 3 1/2 circle | 3.5 1/2 circle | 4 1/2 circle | 4.5 1/2 circle | 5 1/2 circle | 5.5 1/2 circle | 6 1/2 circle | 6.5 1/2 circle | 7 1/2 circle | 7.5 1/2 circle | 8 1/2 circle | 8.5 1/2 circle | 9 1/2 circle | 9.5 1/2 circle | 10 1/2 circle | 10.5 1/2 circle | 11 1/2 circle | 11.5 1/2 circle | 12 1/2 circle | 12.5 1/2 circle | 13 1/2 circle | 13.5 1/2 circle | 14 1/2 circle | 14.5 1/2 circle | 15 1/2 circle | 15.5 1/2 circle | 16 1/2 circle | 16.5 1/2 circle | 17 1/2 circle | 17.5 1/2 circle | 18 1/2 circle | 18.5 1/2 circle | 19 1/2 circle | 19.5 1/2 circle | 20 1/2 circle | 20.5 1/2 circle | 21 1/2 circle | 21.5 1/2 circle | 22 1/2 circle | 22.5 1/2 circle | 23 1/2 circle | 23.5 1/2 circle | 24 1/2 circle | 24.5 1/2 circle | 25 1/2 circle | 25.5 1/2 circle | 26 1/2 circle | 26.5 1/2 circle | 27 1/2 circle | 27.5 1/2 circle | 28 1/2 circle | 28.5 1/2 circle | 29 1/2 circle | 29.5 1/2 circle | 30 1/2 circle | 30.5 1/2 circle | 31 1/2 circle | 31.5 1/2 circle | 32 1/2 circle | 32.5 1/2 circle | 33 1/2 circle | 33.5 1/2 circle | 34 1/2 circle | 34.5 1/2 circle | 35 1/2 circle | 35.5 1/2 circle | 36 1/2 circle | 36.5 1/2 circle | 37 1/2 circle | 37.5 1/2 circle | 38 1/2 circle | 38.5 1/2 circle | 39 1/2 circle | 39.5 1/2 circle | 40 1/2 circle | 40.5 1/2 circle | 41 1/2 circle | 41.5 1/2 circle | 42 1/2 circle | 42.5 1/2 circle | 43 1/2 circle | 43.5 1/2 circle | 44 1/2 circle | 44.5 1/2 circle | 45 1/2 circle | 45.5 1/2 circle | 46 1/2 circle | 46.5 1/2 circle | 47 1/2 circle | 47.5 1/2 circle | 48 1/2 circle | 48.5 1/2 circle | 49 1/2 circle | 49.5 1/2 circle | 50 1/2 circle |
1/4 circle or quarter circle is equal to 360°/4 = 90°. Plural name is quarter circles.
| 1 quarter circles = 0.5 helf circles | 6 quarter circles = 3 helf circles |
| 2 quarter circles = 1 helf circles | 7 quarter circles = 3.5 helf circles |
| 3 quarter circles = 1.5 helf circles | 8 quarter circles = 4 helf circles |
| 4 quarter circles = 2 helf circles | 9 quarter circles = 4.5 helf circles |
| 5 quarter circles = 2.5 helf circles | 10 quarter circles = 5 helf circles |
1/2 circle or half circle is equal to 360°/2 = 180°. Plural name is helf circles.
| 1 helf circles = 2 quarter circles | 6 helf circles = 12 quarter circles |
| 2 helf circles = 4 quarter circles | 7 helf circles = 14 quarter circles |
| 3 helf circles = 6 quarter circles | 8 helf circles = 16 quarter circles |
| 4 helf circles = 8 quarter circles | 9 helf circles = 18 quarter circles |
| 5 helf circles = 10 quarter circles | 10 helf circles = 20 quarter circles |
| 1 quarter circles = 0.5 helf circles |
| 1 helf circles = 2 quarter circles |