发布网友 发布时间:2023-02-17 19:18
共1个回答
热心网友 时间:2023-09-20 19:52
∵在平行四边形ABCD中,BD是对角线,EF∥BC,GH∥AB,
∴S△ABD=S△DBC,S△BEP=S△BHP,S△GPD=S△DPF,
∴S△ABD-S△BEP-S△GPD=S△DBC-S△BHP-S△DPF,
∴S▱AEPG=S▱PHCF,
∴S▱AEPG+S▱EBHP=S▱PHCF+S▱EBHP,
即,S▱ABGH=S▱EBCF,
同理,S▱AEFD=S▱CDGH,
S四边形ABPG=S四边形CBPF;S四边形ADPE=S四边形CDPH
∴图中有5对四边形面积相等,即:S▱AEPG=S▱PHCF,S▱ABHG=S▱EBCF,S▱AEFD=S▱CDGH,S四边形ABPG=S四边形CBPF;S四边形ADPE=S四边形CDPH.