Question

16 Wala 100 point ka salwal

Answer 1

Explanation solution :-

Answer:

parallelograms exercise 9.3 answer 7 figure

Since ar(DBC) = ar(EBC)

And these triangles have a common base, i.e. BC

Hence, they must be having the same altitude.

So, they are between same parallels.

Hence, DE||BC proved.

Answer 2

Answer:

I don't know.......