In Heaven, of course, there's infinite time available, age of ages, world without end. Those who were of a scholarly inclination in their mortal days have limitless opportunities to go on studying.
The ones with a bent for mathematics usually stop after graduating 90 times, and are honoured after the final degree with the title of "right angels."

 Groan.

Oh deary me !

I'm here all week, folks. Don't forget to tip your servers.

Terrible

Sorry, too obtuse for me.

Very (a)cute...

Reflex actions!

Non angli, sed angeli!

QuoteNon angli, sed angeli!

Not angels but Anglicans?  

Good old Pope Gregory ... if he indeed ever said it!

Considering the are mathematicians shouldn't that be "Right Angles"?

In the sense that they are no longer obtuse.

He won't make a 180 on that...

He really only needs to make a 90, all else follows. 

Of course given the infinite time function Heaven might be non-Euclidean, so angels might be right after all