Hannusya, Petrus and Mykolka drew independently one isosceles triangle ABC, all angles of which are measured as a integer number of degrees. It turned out that the bases AC of these triangles are equals and for each of them on the ray BC there is a point E such that BE=AC, and the angle AEC is also measured by an integer number of degrees. Is it in necessary that:
a) all three drawn triangles are equal to each other?
b) among them there are at least two equal triangles? geometryisoscelesIntegersUkrainian TYM