Geodesic
Normal Forms of Triangles and Quadrangles up to Similarity
Journal for geometry and graphics, Tome 20 (2016) no. 2, pp. 173-184.

Voir la notice de l'article provenant de la source Heldermann Verlag

The problem of introducing new normal forms of mathematical objects is considered in the case of Euclidean geometry. Normal forms of plane geometry objects such as triangles up to similarity are considered. Several normal forms for triangles and a normal form for quadrangles of special case are described. Normal forms of simple plane objects such as triangles can be used in mathematics education, computations and research.
Classification : 51M04, 97G50, 97D99
Mots-clés : Normal forms, similarity, triangle, quadrangle 
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     author = {P. Daugulis and V. Vagale },
     title = {Normal {Forms} of {Triangles} and {Quadrangles} up to {Similarity}},
     journal = {Journal for geometry and graphics},
     pages = {173--184},
     publisher = {mathdoc},
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     number = {2},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/JGG_2016_20_2_JGG_2016_20_2_a2/}
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P. Daugulis; V. Vagale . Normal Forms of Triangles and Quadrangles up to Similarity. Journal for geometry and graphics, Tome 20 (2016) no. 2, pp. 173-184. http://geodesic.mathdoc.fr/item/JGG_2016_20_2_JGG_2016_20_2_a2/