Sir please help me to solve the ncert class 9th solution of chapter triangles.How I solve this question of exercise 7.3 question number 1(i). Find the simplest and easiest solution of this question , also give me the best solution of this question. ΔABC and ΔDBC are two isosceles triangles on the same base BC and vertices A and D are on the same side of BC (see Fig. 7.39). If AD is extended to intersect BC at P, show that (i) ΔABD ΔACD .