In this picture B,D, and F are midpoints. AC=50, CE=60, and BD=35
DF=[?]
please help !!
![In this picture BD and F are midpoints AC50 CE60 and BD35 DF please help class=](https://us-static.z-dn.net/files/dac/dfda3a7e385fcc21cea25be3dee047b4.png)