2021-2022学年辽宁省阜新市中考数学模拟预测题含解析及点睛

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17Q4=1,OB=2,CD=2AB9:.PC=2OA=2PD=2OB=4,9.GH=PC=2,3D(m,z?),/.C(m+2,n-4),/.CH=஻L4,AH=777+2—1=/724-1,k,•`C,஺ᙠab-y=—(x>0)c,x.mn=k=(m+2)(஻—4),..n=2m+4(I)জNQ4C=135஺ZCAQ=45°9\-ZOHC=90°9:.AH=CH9H஻-4(11),ὶe(I)(11)@"m=\,n=69k=tnn=6"ঝ᝞G3,•/D{mri),C(m+2,n-4),yH.M(/%+2,0),N(0,n),•/n=2/77+49N(0,2m+4),g-MNḄ᪆h6y=-2x+2m+4(m),kmnm(2m4-4)•ab-y=-=—=----------(IV),XXX

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