Knezevic, Ilija; Sazdanovic, Radmila; Vukmirovic, Srdjan Visualization of the Lobachevskian plane. (English) Zbl 0994.51002 Vis. Math. 4, No. 1, no pag. (2002). Between Euclid’s time and 1829, the conviction that Postulate V depends on I–IV Axioms was so strong that no one recognized the basis for new geometry. “The assumption that the sum of three angles is less than \(180^\circ\) leads to some curious geometry, quite different than ours, but thoroughly consistent” (Carl Friedrich Gauss on 8 Nov 1824).In order to present some of this “new”, “curious” geometry we have created Mathematica package “L2Primitives”.Contents: About “L2Primitives”; hyperbolic geometry; some further applications and exhibition; references. MSC: 51-04 Software, source code, etc. for problems pertaining to geometry 51M09 Elementary problems in hyperbolic and elliptic geometries 68U05 Computer graphics; computational geometry (digital and algorithmic aspects) 68U07 Computer science aspects of computer-aided design Keywords:Mathematica package L2primitives; hyperbolic geometry Software:Mathematica PDFBibTeX XMLCite \textit{I. Knezevic} et al., Vis. Math. 4, No. 1, html document (2002; Zbl 0994.51002) Full Text: Link