2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72169We introduce a trisection axiom for mathematical origami and descibe the totally real origami numbers. We also discuss the solution of Alhazen's problem and its relation to trisections.4 figuresHistory and OverviewMetric Geometry11R04, 12F05, 51M15, 51N20text