角度是两个相交线或表面之间旋转的度量。它以程度（°）或弧度（rad）为单位进行测量。
1 TEC = 0.375 FC
1 FC = 2.667 TEC
例子:
将15 三个第八个圈转换为完整的圆圈：
15 TEC = 5.625 FC
| 三个第八个圈 | 完整的圆圈 |
|---|---|
| 0.01 TEC | 0.004 FC |
| 0.1 TEC | 0.038 FC |
| 1 TEC | 0.375 FC |
| 2 TEC | 0.75 FC |
| 3 TEC | 1.125 FC |
| 5 TEC | 1.875 FC |
| 10 TEC | 3.75 FC |
| 20 TEC | 7.5 FC |
| 30 TEC | 11.25 FC |
| 40 TEC | 15 FC |
| 50 TEC | 18.75 FC |
| 60 TEC | 22.5 FC |
| 70 TEC | 26.25 FC |
| 80 TEC | 30 FC |
| 90 TEC | 33.75 FC |
| 100 TEC | 37.5 FC |
| 250 TEC | 93.75 FC |
| 500 TEC | 187.5 FC |
| 750 TEC | 281.25 FC |
| 1000 TEC | 375 FC |
| 10000 TEC | 3,750 FC |
| 100000 TEC | 37,500 FC |
规则