eng Science and Education Publishing American Journal of Educational Research 2327-6150 2019-10-18 7 10 699 707 10.12691/education-7-10-5 EDUCATION20197105 article Juan Carlos Ruiz Mendoza juancr1@yahoo.com.mx 1 Department of School of Physics and Mathematics, Universidad Autónoma de Nuevo León, Nuevo León, Mexico The study of conics has to get applications in science, particularly in Astronomy. So the objective of this work is to demonstrate the reflective properties of the hyperbola and the parabola and its relationship with the conceptual study of a Cassegrain telescope from the perspective of Geometry Optics. For this purpose, an optical prototype was designed using low-cost materials. An instructional guide will also be provided to prove that the reflective proprieties of these conics are fulfilled by light rays. http://pubs.sciepub.com/education/7/10/5/education-7-10-5.pdf hyperbola parabola the reflection of the light reflexive properties of hyperbola and parabola geometric optics optical prototype