Aplicação de alguns teoremas na resolução de problemas geométricos

Abstract

The objective of this study was to address some theorems of geometry and consequently use them to solve exercises. Here are theorems as the Ceva theorem, Menelaus Theorem and Stewart’s theorem, which are very efficient theorems, specially regarding solving exercises that seem complex. That is, knowing these theorems make us very powerful cognitive point of view, of course. We expose here also another magnificent theorem, also known as theorem of Pappus-Guldin. This theorem has as main objective to calculate areas and volumes of surfaces and solids of revolution. Pappos-Guldin theorem is a brilliant theorem. With it can establish several formulas that involve areas and volumes of revolution solids and surfaces, such as the area of ??a circle and the volume of a very trivially cylinder. This theorem enables solving exercises that seem too difficult of a high school student to solve. In this work in very not only care about the dialect, but also with the above content. For example, we leave to those who have the curiosity to see the demonstration of Pappus-Guldin theorem in Appendices A and B, as for the demonstration of it is necessary to use the Differential and Integral Calculus, which until then the high school student remotely have contact.