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 |
full circle | 0.25 circle | 0.5 circle | 0.75 circle | 1 circle | 1.25 circle | 1.5 circle | 1.75 circle | 2 circle | 2.25 circle | 2.5 circle | 2.75 circle | 3 circle | 3.25 circle | 3.5 circle | 3.75 circle | 4 circle | 4.25 circle | 4.5 circle | 4.75 circle | 5 circle | 5.25 circle | 5.5 circle | 5.75 circle | 6 circle | 6.25 circle | 6.5 circle | 6.75 circle | 7 circle | 7.25 circle | 7.5 circle | 7.75 circle | 8 circle | 8.25 circle | 8.5 circle | 8.75 circle | 9 circle | 9.25 circle | 9.5 circle | 9.75 circle | 10 circle | 10.25 circle | 10.5 circle | 10.75 circle | 11 circle | 11.25 circle | 11.5 circle | 11.75 circle | 12 circle | 12.25 circle | 12.5 circle | 12.75 circle | 13 circle | 13.25 circle | 13.5 circle | 13.75 circle | 14 circle | 14.25 circle | 14.5 circle | 14.75 circle | 15 circle | 15.25 circle | 15.5 circle | 15.75 circle | 16 circle | 16.25 circle | 16.5 circle | 16.75 circle | 17 circle | 17.25 circle | 17.5 circle | 17.75 circle | 18 circle | 18.25 circle | 18.5 circle | 18.75 circle | 19 circle | 19.25 circle | 19.5 circle | 19.75 circle | 20 circle | 20.25 circle | 20.5 circle | 20.75 circle | 21 circle | 21.25 circle | 21.5 circle | 21.75 circle | 22 circle | 22.25 circle | 22.5 circle | 22.75 circle | 23 circle | 23.25 circle | 23.5 circle | 23.75 circle | 24 circle | 24.25 circle | 24.5 circle | 24.75 circle | 25 circle |
1/4 circle or quarter circle is equal to 360°/4 = 90°. Plural name is quarter circles.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
quarter circle | 1/4 circle | ≡ 45 ° | = 1.5707963 rad | Metric system SI |
quarter circles | full circles | quarter circles | full circles |
---|---|---|---|
1 | = 0.25 | 6 | = 1.5 |
2 | = 0.5 | 7 | = 1.75 |
3 | = 0.75 | 8 | = 2 |
4 | = 1 | 9 | = 2.25 |
5 | = 1.25 | 10 | = 2.5 |
Full circle is a traditional unit of plane angle. It is equal to 360 degrees. Plural name is full circles.
Name of unit | Symbol | Definition | Relation to SI units | Unit System |
---|---|---|---|---|
full circle | circle | ≡ 360 ° | = 6.2831852 rad | Metric system SI |
full circles | quarter circles | full circles | quarter circles |
---|---|---|---|
1 | = 4 | 6 | = 24 |
2 | = 8 | 7 | = 28 |
3 | = 12 | 8 | = 32 |
4 | = 16 | 9 | = 36 |
5 | = 20 | 10 | = 40 |
quarter circles | full circles |
---|---|
1 | = 0.25 |
4 | = 1 |
Symbol | Definition |
---|---|
≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |