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 QC = 90 °
1 ° = 0.011 QC
例子:
将15 四分之一圈转换为程度：
15 QC = 1,350 °
| 四分之一圈 | 程度 |
|---|---|
| 0.01 QC | 0.9 ° |
| 0.1 QC | 9 ° |
| 1 QC | 90 ° |
| 2 QC | 180 ° |
| 3 QC | 270 ° |
| 5 QC | 450 ° |
| 10 QC | 900 ° |
| 20 QC | 1,800 ° |
| 30 QC | 2,700 ° |
| 40 QC | 3,600 ° |
| 50 QC | 4,500 ° |
| 60 QC | 5,400 ° |
| 70 QC | 6,300 ° |
| 80 QC | 7,200 ° |
| 90 QC | 8,100 ° |
| 100 QC | 9,000 ° |
| 250 QC | 22,500 ° |
| 500 QC | 45,000 ° |
| 750 QC | 67,500 ° |
| 1000 QC | 90,000 ° |
| 10000 QC | 900,000 ° |
| 100000 QC | 9,000,000 ° |
规则