Beveling - Why won't old edges go away? I'm brand new to blender and have been trying to teach myself for the past few days, but I keep getting thrown by the simplest things. In this case:



I've beveled this edge, but the old 90 degree edge is still there. I can manually delete all 5 pieces of it, but it's super annoying to try to grab those tiny pieces.

I'm using version 2.78 on a mac, but the same thing happens in 2.79:



Would really appreciate some guidance. Thanks!
Not sure what is happening, but I do know that you do not have to select EVERY edge.  If you just grab each corner edge, you can hit delete and select vertices from the drop-down.  This will result with the other edges being deleted as well.