That would have been a good reference, shame I didn't think of it. Blades definitely is the better term.
This reminds me, the backplate of the Mac is also sharp as heck. I actually cut myself once when I was replacing a motherboard on an older Intel Mac. You don't really expect it to be this sharp when you lift it up.
I believe their corners are already/still rounded, though.
If we have to be precise, however, perhaps blades would be a more appropriate term to refer to their products' edges.