170:. The second section shows the 99 points of intersection of the title. Each is given on its own page, as a large figure with three smaller figures showing its construction, with a one-line caption but no explanatory text. The third section provides background material and proofs for some of these points of intersection, as well as extending and generalizing some of these results.
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John Jensen writes that "the clear and uncluttered illustrations of intersection make for a rich source for geometric investigation by high school geometry students". And although Gerry
Leversha calls the book "eccentric" and states that it "is clearly nothing to do with any syllabus anywhere",
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The book is organized into three sections. The first section provides introductory material, describing different mathematical situations in which multiple curves might meet, and providing different possible explanations for this phenomenon, including symmetry, geometric transformations, and
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and in a geometry course focused on the formal proof of geometry propositions. He adds that the book itself is a proof of the possibility of presenting geometry without detailed explanations, and of introducing students to the beauty of the subject.
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in which three or more lines or curves meet in a single point of intersection. This book was originally written in German by Hans Walser as
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Jensen suggests that its examples would make a good complement to coursework both in exploratory geometry using
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Some of these points of intersection are standard; for instance, these include the construction of the
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137:(Eagle / Ed. am Gutenbergplatz, 2004), translated into English by
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471:Euclidean plane geometry
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129:Euclidean plane geometry
87:Euclidean plane geometry
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199:perpendicular bisectors
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31:First edition (German)
219:nine-point hyperbola
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426:"Review of
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55:Translators
40:Hans Walser
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255:Review of
239:References
217:, and the
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