Look up default font?

I know there are ways to set the specific font to use for a graph, but what is the default font, and is there a way to look this up? I need to export graphs for use in a presentation and need them to be the same font as I've used in the presentation, and would prefer to change the presentation's font to match that in the graphs instead of doing so for each of my graphs.
Silly me...just found it in the Misc. menu...ugh...gotta look harder next time. :)