Find the best solution of this important question of ncert class 9th of chapter triangles . Please help me to solve this question in a easiest and simplest way of exercise 7.2 question number 4 . Find the best and easiest solution of this question.ABC is a triangle in which altitudes BE and CF to sides AC and AB are equal (see Fig. 7.32). Show that (i) ΔABE ΔACF (ii) AB = AC, i.e., ABC is an isosceles triangle.