已知平行o边形ABCD中,E为AD的中点,A右:B右=2:3,求AG:GC的值.

问题描述:

已知平行o边形ABCD中,E为AD的中点,A右:B右=2:3,求AG:GC的值.

延长FE交CD于点我,∵四边形ABCD是平行四边形,∴AB∥CD,AB=CD,∴△AEF∽△DE我,△AF1∽△C我1,∴AE:DE=D我:AF,∵E为AD的中点,∴D我=AF,∵△AF1∽△C我1,∴A1:1C=AF:C我,∵AF:BF=2:s,∴AF:AB=2:5...