2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87812We show how some geometric elements of the path of a particle moving in a plane -- the osculating circle and its radius of curvature -- can be used to construct the parabolic trajectory of projectiles in motion under gravity.Latex 4 pages, 1 figurePhysics Educationtext