如图,点D,E在BC上,且FD//AB,FE//AC.求证:△ABC~△FDE
问题描述:
如图,点D,E在BC上,且FD//AB,FE//AC.求证:△ABC~△FDE
答
证明:
∵FD//AB
∴∠ABC=∠FDE
∵FE//AC
∴∠ACB=∠FED
∴⊿ABC∽⊿FDE