In `DeltaABC`, let `D` be the mid point of `BC`. If `/_ADB=45^@` and `/_ACD=30^@` then determine `/_BAD`

In the given DeltaABC , points D and E are mid points of AB and AC and also BC=6 cm then find DE.

In DeltaABC if r_(1)=2r_(1)=3r_(3) and D is the mid point of BC then cos angle ADC=

In DeltaABC , D, E and F are the mid points of the sides, then DeltaDEF =

In DeltaABC ,D and E are the mid-points of AB and AC. Again, F and G are the mid-points of DB and EC, If BC=12,what is the length of FG?

In the given Fig. 3, in DeltaABC, D and E are the mid point of the sides AB and AC respectively. Find the length of DE. Prove that DE = (1)/(2) BC.