Corners shapes (Slanted, anticurve, antisquare…)
Please add corner shapes. Slanted is the most urgent as it's too basic to not already exist, but others like anti square etc would be welcomed.
Corner radius would set the size of all or individual corners , just as for the round shape. See menu.png.
All designs are not round! This will add a lot of flexibility for shape design and allow more diversity.
I'd say that the sharp corner can be seen as an angled corner. An example is given in the Material Theme Editor (a Sketch plugin): https://material.io/tools/theme-editor/.
Scroll down to "Set shape" for a video example.
Can you give us a bit more information? XD currently allows you to select round or sharp corners for each corner -- all round, all sharp, or mixed. Are you asking for something different?
Your reverse corner request has been noted, thank you.
Switch between rounded and sharp corner. Or possibility to mix them up in one shape. Also reverse round corners would be nice.