The Apple iPad Pro2 WiFi (256GB) 12.9-inch iPad Pro display has rounded corners that follow a beautiful curved design, and these corners are within a standard rectangle. When measured as a standard rectangular shape, the screen is 12.9 inches diagonally (actual viewable area is less)
/ipad-pro-12-11-select-201810_FMT_WHH-550x550.jpg "Apple iPad Pro2 WiFi (256GB)")
/e2368646e105c22666b92627cf89f341-550x550w.jpg "Apple iPad Pro2 WiFi (256GB)")
/1413499418-iPadAir2-iPadMini3-Lockscreen-PRINT-550x550h.jpg "Apple iPad Pro2 WiFi (256GB)")
/ipad-pro-12-11-select-201810_FMT_WHH-80x80.jpg "Apple iPad Pro2 WiFi (256GB)")
/e2368646e105c22666b92627cf89f341-80x80w.jpg "Apple iPad Pro2 WiFi (256GB)")
/1413499418-iPadAir2-iPadMini3-Lockscreen-PRINT-80x80h.jpg "Apple iPad Pro2 WiFi (256GB)")