∵点F与点A关于直线OP对称,

∵点F与点A关于直线OP对称, ,萸F迵萸A壽衾眻盄OP勤備, , ，AO=OF ,AC,OM, ,MON=45, ，,OAC=90, MON=45, ，,ACO=, ，OF = AO = AC .........10煦 蚕ㄗ2ㄘ眭侐晚倛ADFE岆鎂倛 ,,，EF,AB AD=EF ,,,AB,ON ,,，,ABC=90, ,,，,EFC=,ABC =90, ,,,,,ACO=45, ,,,，,ACO=,CEF ,,,，FC = EF =AD 衱,OC=OF+FC ，OC = AC+AD .........12煦 ㄗ楊2ㄘ痐隴ㄩ蟀諉EF. AC,OM, ,MON=45, , ，,OAC=90, ACO =,MON =45, ，, ，AO=AC ,蚕ㄗ2ㄘ眭侐晚倛ADFE岆鎂倛 ，EF,AB AD=EF ,AB,ON ，,ABC=90, ，,EFC=,ABC=90, ,,ACO=45, ,，,FEC = ,ACO =45, .........9煦 ,，FC=FE=AD ,,,AOE=,FOE ,,OE=OE, ,OAC=,OFE=90, ,?OAE，?OFE .........11煦 ,，OA=OF ,，OF=AC ,衱,OF+FC=OC ,，AC+AD=OC .........12煦 ㄗ楊3ㄘ痐隴ㄩ晊酗EA善G萸ㄛ妏AG=AE ,,OAE=90, ，OA,GE ,,,，OG=OE ，,AOG=,EOA ,,AOC=45,,OPAOC ，,AOE=22.5, ，,AOG=22.5,,G=67.5, ，,COG=,G=67.5, ,,,，CG=OC .........10煦 蚕ㄗ1ㄘ腕AD=AE ,,,,AD=AE=AG ,,,，AC+AD=OC .........12煦 匐,賤湘枙ㄗ掛枙14煦ㄘ