valuationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r(4)\r??/BCD=LBAF,?FBD=60°\rBF=BD,AF=CD=V3,(BDC=CBFA,\r!!.BFD5WdrX\r?BF=BD=DF\r??/,ADC=30°,\r.Z.ADB+Z.BDC=30°\r?BFA+Z.ADB=30°\r?Z.FBD+?BFA+Z.BDA+Z-AFD+Z.ADF=180°\r!60°+30°+Z.AFD+Z.ADF=180°\rZ.AFD+Z.ADF=90°\r?LFAD=90°\rDF=y/AF2+AD2=V7\rBD=V7\r(1)hpqcAB=CO,OA=OC,BO=DO,cmAAOBdAC^^c48=\rND,hdrX¥r¦ec`p\r(2)hpqc2B=CD,OA=OC,BO=DO,cmAAOBdCOD,cNB=\r?D,hdrX¥r¦ec`p\r(3)hpqc48=CD,OA=OC,BO=DO,cmAOB=^COD,c48=\rND,hDre§¦VWX¥r¦ec`p\rXK\rh(1)(2)(3)cjx]xrrr~\rw@ ¡\r(4)J¨BCDB60^MBAF,£¤FC,hpqcBF=BD,\rAF=CD=<,?BDC=KBFA,hdrX¥r¦ec`4©4^=90^hª«e\rc`.\r&20'(21'EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\r*+5drX¬+,-.pqCdrX®e¦pqWdrX®\re¦pqjt¯°±²³´CdrX5*+A.