Joaquin Ruiz Basto2026-03-222026-03-22199610.24844/em0802.10https://doi.org/10.24844/em0802.10https://andeanlibrary.org/handle/123456789/73027This paper contains didactical suggestions for instructional materials (to-be made or transparencies) to aid the students to establish some properties that define the conics.Metric properties of tangents to a conic surface containing inscribed spheres and a cutting plane are used to examine the mathematical content.esGeologyarticle