This final project discusses the development of the Opposite Erdos-Mordell Ine- quality in Convex Quadrilaterals. The Opposite Erdos–Mordell Inequality is an extension of the classical Erdos–Mordell Inequality, which is originally formu- lated for triangles and later generalized to convex quadrilaterals. While the standard Erdos–Mordell Inequality compares the perpendicular distances from…