sABAAAIv8aAAQAABX/3UI/1Y0D7dHPAP4O/0Ph9QAAABmgT9QRQ+FyQAAAI2f+AAAAA+3TwZJg8Mo4vs73Q+HsQAAAItHKCtDDHIjA0MUagBQ/3UI/1Y8UIvEagRQ/3UI/1Y0WGY9YOgPhIYAAACBSyQAAADgagJqAP91CP9WPIP4/3RwUAX8GQAAK0MUiUMQi1MIO8JyFolDCItPOEkDwQPR99EjwSPRK8IBR1BZK0sUA0sMh08oA0806AAAAABfge8jDwAAiQ+D7xFo...

则:RG垂直平分CD,GF=EF/2=(CD-DE-CF)/2=1.∵⊿FGP∽⊿FDA.∴FG/FD=PG/AD,1/3=PG/4,PG=4/3,则PO=OG-PG=4/2-4/3=2/3,PR=2PO=4/3;由SQ∥DC,DS∥EQ可知,四边形DSQE为平行四边形,则SQ=DE=1.∴S菱形PSRQ=PR•SQ/2=(4/3)x1/2=2/3....