AD:AF=1:2
DE:FG=1:2
S△AFG
=4S△ADE
=4×2
=8cm²
同理
S△ABC
=9S△ADE
=9×2
=18cm²
所以
四边形DFGE面积为
S△AFG-S△ADE
=8-2
=6cm²
四边形FBCG的面积为
S△ABC-S△AFG
=18-8
=10cm²
AD:AF=1:2
DE:FG=1:2
S△AFG
=4S△ADE
=4×2
=8cm²
同理
S△ABC
=9S△ADE
=9×2
=18cm²
所以
四边形DFGE面积为
S△AFG-S△ADE
=8-2
=6cm²
四边形FBCG的面积为
S△ABC-S△AFG
=18-8
=10cm²