Nine Solved and Nine Open Problems in Elementary Geometry
Florentin Smarandache

TL;DR
This paper reviews nine solved and nine open problems in elementary geometry, extending some from 2D to 3D and discussing conjectures and open questions for future research.
Contribution
It extends existing elementary geometry problems from 2D to 3D and provides comments, conjectures, and open questions for further exploration.
Findings
Reviewed nine solved problems in elementary geometry
Extended some problems from 2D to 3D geometry
Proposed conjectures and open questions for future research
Abstract
In this paper we review nine previous proposed and solved problems of elementary 2D geometry, and we extend them either from triangles to polygons or polyhedrons, or from circles to spheres (from 2D-space to 3D-space) and make some comments, conjectures, and open questions about them.
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Taxonomy
TopicsMathematics and Applications · History and Theory of Mathematics · Advanced Mathematical Theories
