In figure, E and F are mid - points of the sides AB and AC respectively of the ΔABC. G and H are mid-points of the sides AE and AF respectively of the ΔAEF. If GH =1.8 cm, find BC.

In figure, E and F are mid - points of the sides AB and AC respectivel

1.	In figure, E and F are mid - points of the sides AB and AC respectively of the ΔABC. G and H are mid-points of the sides AE and AF respectively of the ΔAEF. If GH =1.8 cm, find BC.
Answer» In figure, E and F are mid - points of the sides AB and AC respectively of the $Δ A B C$ . G and H are mid-points of the sides AE and AF respectively of the $Δ A E F$ . If GH =1.8 cm, find BC.