Question

in triangle abc d e n f are midpoints of sides ab BC and CA if ab is equal to 6 CM BC equal to 7.2 cm and ac is equal to 7.8 cm find the perimeter of triangle d e f​

Answer 1

Answer:

10.5 cm

Step-by-step explanation:

From mid point theorem, DE=1/2AC, EF=1/2AB, DF=1/2BC

So

P=(6+7.2+7.8)/2=21/2=10.5