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 = 2.356 rad
1 rad = 0.424 TEC
例子:
将15 三个第八个圈转换为弧度：
15 TEC = 35.343 rad
| 三个第八个圈 | 弧度 |
|---|---|
| 0.01 TEC | 0.024 rad |
| 0.1 TEC | 0.236 rad |
| 1 TEC | 2.356 rad |
| 2 TEC | 4.712 rad |
| 3 TEC | 7.069 rad |
| 5 TEC | 11.781 rad |
| 10 TEC | 23.562 rad |
| 20 TEC | 47.124 rad |
| 30 TEC | 70.686 rad |
| 40 TEC | 94.248 rad |
| 50 TEC | 117.81 rad |
| 60 TEC | 141.372 rad |
| 70 TEC | 164.934 rad |
| 80 TEC | 188.495 rad |
| 90 TEC | 212.057 rad |
| 100 TEC | 235.619 rad |
| 250 TEC | 589.048 rad |
| 500 TEC | 1,178.097 rad |
| 750 TEC | 1,767.145 rad |
| 1000 TEC | 2,356.194 rad |
| 10000 TEC | 23,561.936 rad |
| 100000 TEC | 235,619.365 rad |
规则