Question

friends please give me a answer ​

Answer 1

Answer:

27

Step-by-step explanation:

by the mid-point theorem

we can say that by adding the mid points of two sides is parallel to the third side and half of the third side

so

DE+EF+FD= 1/2(AB+BC+CD)

= 1/2(17+18+19)

=1/2(54)

= 27