2021-2022学年山东菏泽定陶区中考数学全真模拟试题含解析及点睛

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B'ᙶ᪗ᵫAஹBᙶ᪗ᑭᵨ·8ᦪqvt
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16⊤PCDḄQRS⊤PTBOCḄ☢VᵫᩩX-ᑮᐵZC[ᙶ᪗Ḅ^_`-C[ᙶ᪗K(3)aMBbycZ[N,ᑣe-TABOgANBO,`-N[ᙶ᪗`-fgBNḄ8᪆*ὶjfgBMklᱥg8᪆*`-M[ᙶ᪗nMoMGJ_ycZ[G,ᵫBஹCḄᙶ᪗`-OBOCḄQᵫpqrsḄឋu`-ᘤḄwx[Pᙠy3z▲ᑁ}nPoPHJ_xcZ[H,ᵫᩩXe-TMOGs/^POH,ᵫ~==Ḅw`-pHOH,`-P[ᙶ᪗KxP[ᙠyz▲}2ᳮ`-P[ᙶ᪗.OPPHOHூ8௃(1)VB(2,t)ᙠfgy=x,.t=2,AB(2,2),4a+2b-2AஹB[ᙶ᪗ᐭlᱥg8᪆*-993,a=28-:-a+—b^0b=-3142lᱥg8᪆*Gy=2/33%(2)᝞
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1(3)ᙠ.aMBbycZ[N,᝞
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17VB(2,2),.,.ZAOB=ZNOB=45°,ᙠ4AOB^flANOB0VZAOB=ZNOB,OB=OB,ZABO=ZNBO,/.AOB^ANOB(ASA),3.*.ON=OA=-,331.•.afgBN8᪆*Gy=kx+5,B[ᙶ᪗ᐭ-2=2k+8-k=1313—XH—fgBNḄ8᪆*Gy=+ὶjfgBNlᱥg8᪆*-42,8-92x2-3xVC(1,-1),ZCOA=ZAOB=45°,B(2,2),.,.OB=2V2»OC=V2»VAPOC^AMOB,x[Pᙠy3z▲},᝞
3,nMoMG_LycZ[G,nPoPH_LxcZ[H,᝞
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18P'Pᙠ¿`À▲᝞4,»M¼MG_Ly½"'G,»P¼PH_Ly½"'H,13145bᳮvt
PH=-MG=—,OH=-OG=—,216264—,—)1664)⚪j¯ÃᦪḄÄᔠÅᵨÆÇ·8ᦪqஹ`HḄ☢Éஹ¯ÃᦪḄឋ5ஹᐰ:`HḄᑨ8ឋ5ஹËÌ`HḄᑨ8ឋ5ஹ£§ÍÎÇᑖÏÐÑÍÎ:ÒÓ.ᙠ(1)%uG·8ᦪqḄÅᵨᙠ(2)%ᵨC'ᙶ᪗⊤ÔÕBOCḄ☢É0⚪ḄᐵCᙠ(3)%Ö8'PḄ×Ø᪀⌼ËÌ`H0⚪ḄᐵCuGᑖ.24ஹ(1)c=-l-h(2)y=x2-2x-3K(3)—2ூ
᪆௃(1)ÛA(-1,0)¡ᐭy=x2bx+c,ᓽv
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ᑮQN஻MH,᪷F123Ḅឋ5
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NHMᓱ,᪷Fçè8ᳮ
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ᑮtL7,t2(ëe)t
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20VNQMN+NQMP=180°,/QMN+NQMN+/NMH=180°,VNQMN+^MQN+/NMH=180°,NQMN=^MQN,aQN=MN=t,ᑣQ(l—t,t2—4),ADN=t2-4-(-4)=t2,2ᳮaMN=s,ᑣHD=s2,NH=t2-s2,ᙠRtAMNH0NH2=MN2-MH2..•.(t2-s2)2=t2-s2,t2-s2=1...NH=1,…NH1..tan/NMH=-----=—,MHtfTTMHt1tan/MDH=-----,DHt2tNMH=^MDH,V/NMH+^MNH=90°:.^MDH+^MNH=90°,"NMD=90°KVQN:DH=15:16,ADH=—t,DN=—1+1,1515Vsin^NMH=sin^MDN,NHMN3=J—..=----»ᓽt16,MNDNt+l]5538-9t,=-,t,=--()35AMN=-,3VNH2=MN2-MH2»4MH=—=PH,3

2147APK=PH+KH=—+133720x*=-}y3~9••-CK=3-T47-19:.tan/KPC=---73-3•••஽KC=/BOC=90°,"GC=/OBC=45஺AKG=CK=-,CG=-V2,PG=---=—99399nPoPT_LBCZT,APT=GT=—PG=-V2=CG29.♦.CT=2PT,PTPT:.tan/PCF=CT2PT2ூ[¡௃"⚪ὃ£¤¥¦§ᦪ©`ª«ᦪḄ8᪆*¬gḄឋur«ᦪḄ¦®¯°¦ᳮ±²Ḅo³´g᪀⌼frrs8⚪Ḅᐵ·.25ஹ(1)w=200x+8600(0

22Oðñò12-(10-x)=x+2ᔴôõw=300x+500(6-x)+400(10-x)+800(x+2)=200x+8600(00,ᡠwPx=()ôõᨬû.±D0ù8ðøᑮCð஺ú஺ð6úùAðøᑮCð10ú஺ð2úᨬûõ08600ᐗ.ூ'(௃)⚪y'ὃ.Ãᦪü=Ḅ᪀ýὃ.ᑭᵨV¯ÃᦪḄᨵᐵÒÓþ▭ᵨ⚪ᦪḄᵨ⚪⌕Ḅ▭⚪ᨵ.ஹ226ஹ(1)xi=9,X2=-2(2)xi=l,X2=--.3ூ᪆௃(1)ᐜᑖ&'ᓽ)*+,-ᐗ/01+/0Ḅᓽ)2(2)3⚗5ᑖ&'ᓽ)*+,-ᐗ/01+/0Ḅᓽ).ூ6௃7(1)x2-7x-18=0,(x-9)(x+2)=0,x-9=0,x+2=0,xi=9,xz=-2(2)3x(x-1)=2-2x,3x(x-1)+2(x-1)=0,(x-1)(3x+2)=0,x-1=0,3x+2=0,

232XiX23ூ[¡௃"⚪ὃ£¤83ᐗª^_ÜÝÞßà*ᑖ8©8á⚪Ḅᐵ·.27ஹâ8᪆.ூ8᪆௃ᑭᵨäsḄឋuᔠ¬gḄឋu-NC0F+NAOF=9O஺åS-NC0F=NZMF,ᵫAO஻8C,-æᫀ.ூ8௃,•,çs48஺äs.ZADC=90°,AD//BC,.ZCDF+ZADF=90°,,.,OFJ_AEZ[F,.NAMF+NAOè=90°,:.ZCDF=NDAF.VAD//BC,.NDAF=NAEB,:.NAEB=NCDF.ூ[¡௃á⚪é⌕ὃ£¤äsḄឋu×جgḄឋu±²-NCDF=ZDAF8⚪ᐵ·.