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 = 1.5 QC
1 QC = 0.667 TEC
例子:
将15 三个第八个圈转换为四分之一圈：
15 TEC = 22.5 QC
| 三个第八个圈 | 四分之一圈 |
|---|---|
| 0.01 TEC | 0.015 QC |
| 0.1 TEC | 0.15 QC |
| 1 TEC | 1.5 QC |
| 2 TEC | 3 QC |
| 3 TEC | 4.5 QC |
| 5 TEC | 7.5 QC |
| 10 TEC | 15 QC |
| 20 TEC | 30 QC |
| 30 TEC | 45 QC |
| 40 TEC | 60 QC |
| 50 TEC | 75 QC |
| 60 TEC | 90 QC |
| 70 TEC | 105 QC |
| 80 TEC | 120 QC |
| 90 TEC | 135 QC |
| 100 TEC | 150 QC |
| 250 TEC | 375 QC |
| 500 TEC | 750 QC |
| 750 TEC | 1,125 QC |
| 1000 TEC | 1,500 QC |
| 10000 TEC | 15,000 QC |
| 100000 TEC | 150,000 QC |
规则