### Journals Information

**
Mathematics and Statistics Vol. 8(4), pp. 392 - 403 DOI: 10.13189/ms.2020.080404 Reprint (PDF) (701Kb) **

## Construction of Triangles with the Algebraic Geometry Method

**Viliam Ďuriš ^{1}^{,*}, Timotej Šumný ^{2}**

^{1}Department of Mathematics, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, 94974 Nitra, Slovakia

^{2}Benkova Primary School, Benkova 34, 949 11 Nitra, Slovakia

**ABSTRACT**

The accuracy of geometric construction is one of the important characteristics of mathematics and mathematical skills. However, in geometrical constructions, there is often a problem of accuracy. On the other hand, so-called 'Optical accuracy' appears, which means that the construction is accurate with respect to the drawing pad used. These "optically accurate" constructions are called approximative constructions because they do not achieve exact accuracy, but the best possible approximation occurs. Geometric problems correspond to algebraic equations in two ways. The first method is based on the construction of algebraic expressions, which are transformed into an equation. The second method is based on analytical geometry methods, where geometric objects and points are expressed directly using equations that describe their properties in a coordinate system. In any case, we obtain an equation whose solution in the algebraic sense corresponds to the geometric solution. The paper provides the methodology for solving some specific tasks in geometry by means of algebraic geometry, which is related to cubic and biquadratic equations. It is thus focusing on the approximate geometrical structures, which has a significant historical impact on the development of mathematics precisely because these tasks are not solvable using a compass and ruler. This type of geometric problems has a strong position and practical justification in the area of technology. The contribution of our work is so in approaching solutions of geometrical problems leading to higher degrees of algebraic equations, whose importance is undeniable for the development of mathematics. Since approximate constructions and methods of solution resulting from approximate constructions are not common, the content of the paper is significant.

**KEYWORDS**

Algebraic geometry, Approximation, Biquadratic Equation, Cubic Equations, Euclidean Construction, GeoGebra

**Cite This Paper in IEEE or APA Citation Styles**

(a). IEEE Format:

[1] Viliam Ďuriš , Timotej Šumný , "Construction of Triangles with the Algebraic Geometry Method," Mathematics and Statistics, Vol. 8, No. 4, pp. 392 - 403, 2020. DOI: 10.13189/ms.2020.080404.

(b). APA Format:

Viliam Ďuriš , Timotej Šumný (2020). Construction of Triangles with the Algebraic Geometry Method. Mathematics and Statistics, 8(4), 392 - 403. DOI: 10.13189/ms.2020.080404.