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15........=Vx-2W2+2013Oo=V2+V3-2W2+2013.....=3+2013...=2016..ூ᪆᪷\]ᐰ_`2ab2cdeᐭgᓽ3.郑郑..i⚪ὃkḄ?@᪷2Ḅᓄmno]ᐰ_`2⚪Ḅᐵ.....................19.ூᫀV1WrsdACBCᓽwᡠn;....Oo....鼠.....您3to.-.-E....翔V2Wz•••OA=OB,OC=OD,...•••~d4CBZW_~dV_ᑖḄ~d_~dW氐Oo•••AACB=90°,..塘.•• ~d4C8DsdVᨵ0Ḅ_~dsdW......ᦑᫀwOC,_ᑖḄ~d_~dᨵ0Ḅ_~.ttidsd.堞郦堞....ூ᪆V1W᪷\⌕n6rdᓽ3......V2W..K-..᪷\ᨵ0Ḅ_~dsdzᓽ3........磐.i⚪ὃk6r-ᩖ6r_~dḄᑨAឋsdḄᑨ⚪Ḅᐵ...冰.Ooi6r........20.ூᫀzz•••~dABCC_~d../.AB//CD,AB=CD.区氐:.Z-BAE=DCF...........ᙠA/BEACD.........AB=CD......BAE=DCF..OoAE=CF..ABCDF......16⚓ᐳ23⚓..
16 • BE=DF.z? ~d/BCD_~d---AD//BC,AD=BC. • Z.DAF— BCE.-AE=CF, AF=AE+EF=CF+EF=CE.ᙠ4DFAC8E.(AD=BC\^.DAF= BCE\AF=CEADF=^CBE. • BE=DF.ூ᪆i⚪ὃkḄᑭᵨ_~dḄឋ¨ᔠ©dᐰᩭ«ᨵᐵ¬Ḅz.⌕zBE=DF,34®zABE^LCDF¯°z±BE=D²⌕zABE^LCDF,ᵫ_~dḄឋ48=CD,AB//CD,/.BAE=/.DCF,´AE=CF,µ3ᵫSASzAABE©(?£)º°BE=CF±z.i⚪»34®z49©CBEᩭz¬.21.ூᫀ11y>3(1)@½ᦪy=-2x+3Ḅr¾ᩩHx=0N±y=3Hy=0N±x=|,•••ᙶ᪗ÂḄÃ0ÄÅᑖÆ(0,3)A(|,0),ᐸr¾È
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19........UV56ᡭᑐ2>YZᨵ\<]2ᑣ*220(4)ÆᵱஹµᦪᑖÈÉᐸ³´᳛ËÌÍᓽ .w⚪ὃz⚣ᦪᑖ¡Î5ஹ᪵w®ZÐÑ<Ò⚪ḄᐵÓ!ÔÕÖ×Øwᭆ¹ᮣÚÛᵨᡠ¥<ÒÝÞ⚪©§ὃßὃ⚪à.26.ூ&ᫀ:(1)Æ4(2,3)EC8(0,—1)-ᐭy=kx+b,0:áâãM],MSᦪ᪆e(y=2x-1)(2)•••CBᐵ§xQḄåC(C, •.CCḄᙶ᪗!(0,1).•••C(xQK"#SCè4DéCDêEᨬìCCᐵ§%QḄåC(48ᓽ(íî4éíîCDêEḄᨬjᓽ=J22+[3-=2V5.(3)Sᦪy=ax+c(a*0)Ḅ56ï}CC,+(0,1)-ᐭ0ᑮy=ax+1,+C(2,3)-ᐭy=ax+1,m0a=1,,••%>2,§xḄðS¦jᦪy=ax+l(m&0)Ḅj§Sᦪy=kx+bḄj••.aḄijl!a<1.ூ᪆(1)|}ñhòᦪÆ4(2,3)EC8(0,-1)-ᐭ᪆emᓽ .(2)CCᐵ§xQḄåC(B.óuAB,ᑭᵨÆõö÷Þ⚪4BḄøùᓽ(ᨬj.(3)ᑭᵨSᦪy=ax+c(a0)Ḅ56ï}CC,0ᑮy=ax+l,᪷cC(2,3)uᔠ56ᓽ m0.w⚪ὃzñhòᦪSᦪ᪆eஹÆõö÷Þ⚪úSᦪEûÑeḄᐵò⚪ᐵ!ÔÕÖ×SᦪḄឋ.27.ூ&ᫀ(1)üýজIPICE,•••CEP=90°,•:þÿ 4BCD •••/-ABC=90°,
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