It is a 2cm rounded corner. If the arc radius reaches R20, it is generally the blank size of the casting. Generally, the R of the arc radius is capital R. I have seen the large R and small R of the circle radius. If there are drawings, you can see it directly.
Rounded Corner Patent
Many of Apple’s previous iPhone and iPad patents have more or less included some actual functions, such as the Home button, back contour design or front panel Overall glass covering design, etc. However, the patent obtained this time only describes the appearance design of a device, which is a rectangular shape with rounded corners.
The applicable scenarios of this patent are really too wide. Of course, you can say that the patent image limits this patent to devices with specific aspect ratios. In this way, tablets with other sizes and proportions are still suitable. It can be non-infringing.