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Title: Thought provoking introduction to "modern" geometry
Review: I remember being given this book as a thirteen year old and finding the ideas stimulating and interesting. Later as an undergraduate in mathematics and physics I was able to dip into it again, and then again as a graduate student.At least some (and later all!) of the ideas in the book, four dimensions and 'embedded' universes, non-Euclidean geometry and the 'bent', relativistic nature of space-time are presented with creative analogies and clever diagrams. I'd recommend this book to any clever teenager interested in being stretched and introduced to some of the important and exciting ideas of modern geometry and space-time.
