MathDB
SMT 2019 Geometry #6

Source:

August 8, 2023
geometry

Problem Statement

Let the altitude of ABC\vartriangle ABC from AA intersect the circumcircle of ABC\vartriangle ABC at DD. Let EE be a point on line ADAD such that EAE \ne A and AD=DEAD = DE. If AB=13AB = 13, BC=14BC = 14, and AC=15AC = 15, what is the area of quadrilateral BDCEBDCE?