1.S△DPF=1/2*S△DPB=S△DQB/4=S△DBC/8=4*4/16=1
2.S△BEF=S△BAF-S△AFE=S△CAF-S△AFE=S△EAC=S△ADE=1
3.S△BDE=54=S△DEF=S CDEF/2=S△ABC/6
S△ABC =6*54=324
4.设AH=x AE=y
S△EHC=SABCD-S△BHC-S△EDC-s△AHE=6
10*2=BH*4+DE*4+(4-BH)*(4-DE)
20=16+BH*DE
GF=BH*DE/4=(20-16）/4=1
1.S△DPF=1/2*S△DPB=S△DQB/4=S△DBC/8=4*4/16=1
2.S△BEF=S△BAF-S△AFE=S△CAF-S△AFE=S△EAC=S△ADE=1
3.S△BDE=54=S△DEF=S CDEF/2=S△ABC/6
S△ABC =6*54=324
4.设AH=x AE=y
S△EHC=SABCD-S△BHC-S△EDC-s△AHE=6
10*2=BH*4+DE*4+(4-BH)*(4-DE)
20=16+BH*DE
GF=BH*DE/4=(20-16）/4=1