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Check out and download the selection here: http://bit.ly/NonEuclideanCards

This series's cards were made by Nick DeWitt.

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Comments

Hao Sun

So actually Euclids 5 postulates postulate a lot more than they let on for instance that a line divides a plane into 2 "sides" and that there is some notion of distance? anything else? So in a sense not everything follows from the 5 postulates which also leads to the point are there things we assume with the 4th postulate that are less obvious than the 5th postulate?

KC

I never get tired of this pun

Hao Sun

I seriously can't believe I'm the only one interested in this question?

Lensman

I am also not able to download these from the links. I am wondering if the cards are only available for a limited time?