1. click edit mesh > insert edge loop
2. click on an edge that you want to split.
i don't remember if 1. is right since i dont use the menus to get the split polygon tool
insert edge loop will insert an edge loop so long as all the edges it comes across has an opposite edge
that's a "Ch" pronounced as a "K"
Computer skills I should have:
Maya, XSI, Photoshop, AfterEffects, Motion, Illustrator, Flash, Swift3D