Marvin J. Greenberg, Euclidean and Non-Euclidean Geometries: Development and History, 3rd Edition, W.H. Freeman, New york; downloaded from the site:
http://u.cs.biu.ac.il/~margolis/Euclidean%20Geometry/Euclidean%20Geometry%203rd%20Editon.pdf


As the author says in the first few lines of the preface, "This book presents the discovery of non-Euclidean geometry and the subsequent reformulation of the foundations of Euclidean geometry as a suspense story."

For more on the sort of things I have been trying to tell you in my last two lectures, you can look up this book.
Cannot display this resource, URL is invalid.