You can if you know those good ol' mode-commands. But yeah, no drag'n'resize like on all other platforms unless you install third party software like MinTTY and ConEmu.
You not need to use "mode" command to do it. If you search in the options of cmd.exe, there is a way to set the width in characters, but cmd.exe can't remember it for the next time that you open it (so is useless by laziness).
ConEmu is far better that cmd.exe, but I really wish having Konsole or Yakuake running in Windows.
You can if you know those good ol' mode-commands. But yeah, no drag'n'resize like on all other platforms unless you install third party software like MinTTY and ConEmu.