如图在三角形ABC中DE//FG//BC,且AD:DF:FB=1:2:3,则S△ADE:S四DFGE:S四FBCG等于?
如图在三角形ABC中DE//FG//BC,且AD:DF:FB=1:2:3,则S△ADE:S四DFGE:S四FBCG
如图,△ABC中,DE//FG//BC,AD:DF:FB=1:2:3,则S四边形DFGE:S四边形FBCG=
如图三角形ABC中,DE//FG//BC,且AD=DF=BF.求S三角形ADE:S四边形DFGE:S四边形FBCG
如图,三角形ABC中,DE//FC//BC,如果AD:DF:FB=1:2:3,则S四边形DFGE:S四边形FBCG=
如图,已知△ABC中,DE//FG//BC,且AD:DF:FB=1:1:1,则S△ADE:S四边形DFGE:S四边形DB
如图,△ABC中,DE//FG//BC,AD:DF:FB=3:2:1,求△ADE、四边形DEGF、四边形FBCG的面积比
如图,已知△ABC中,DE//FG//BC,AD:DF:FB=2:3:4,求S△ADE:S四边形DEGF:S四边形FGC
如图,△ABC中,DE//FG//BC,AD:FD:FB=1:1:1,则S△ADE:S四边形DEGF:S四边形FGCB
如图在△abc中de∥fg∥bc若de:fg:bc=2:5:9则ad:df:fb=
如图,已知三角形ABC中,DE平行于BC,且S△ABC比S△CDE=1:3,求S△ADE:S△DBC
如图 在△ABC中,DE//FG//BC,AD:DF:BC=1:2;3,BC=10cm
如图,在△ABC中,DE∥BC,且S△ADE:S四边形BCED=1:2,BC=26.求DE的长.