Question

Triangle ABC is an isoceles triangle in which AB=AC. D and E are the mid points of sides AB and AC respectively. DE is 3.5cm. Find the perimeter of triangle ABC when AD =4.5CM

Answer 1

triangle abc is an is so triangle so ab=ac ,d is midpoint of ab,ad =bd similarly ae =ec ad=4.5, bd =4.5 ,ab=ad+bd, ab=9,ab=ac ,ac=9 ,ed=3.5 de is parallel to bc so de =1/2bc(according to midpoint theo)bc=2de ,bc=7, perimeter =sum of all sides ,=ab+bc+ac=9+9+7,so perimeter =25cm

Answer 2

here is your answer dear friend