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Mathematics homework~anxious! http://upload.u-discuss.net/./file/20071226103405.jpg
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1. 4C=12 C=3 A=C+4 =3+4 =7 D=0.5(A-C) =0.5(7-3) =2 E=2C =6 F=2(C+D) =2(3+2) =10 G=C^2 =9 H= -(-D)^2X(E-F)/4 = -(-2)^2X(6-10)/4 = -4 x -1 =4 I =2C-1 =5 B=[Ax(-2)-GX(-6)]/5 =[-14 +54]/5 =8 A=7, B=8, C=3 D=2, E=6 ,F=10 G=9, H=4 ,I=5 2 要畫圖...你自己加油 le條唔難係煩 用圓規 就可以畫到3角形 with 佢要既長度~~你應該識架la 3.ACIG is a parallelogram and AI is DIagonal so area of AIG = area of IAC (with same base,AC and IG)(SAME HEIGHT)<--要自己+一條 同base 成90度既線 ABED 都係parallelogram(ab//de , ad//be)(by def.) 同樣AED = EAB EFIH 都係parallelogram (ef//hi , eh//fi)(by def.) 而EIH = IEF area of AIG-AED-EIH=DEHG area of IAC-EAB-IEF=BCFE so DEHG=BCFE 方法如上 無check數= =太長....方法係咁 有可能會計錯(我指2+1 =2個d錯=.=..)
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Mathematics homework~anxious!發問:
Mathematics homework~anxious! http://upload.u-discuss.net/./file/20071226103405.jpg
最佳解答:
1. 4C=12 C=3 A=C+4 =3+4 =7 D=0.5(A-C) =0.5(7-3) =2 E=2C =6 F=2(C+D) =2(3+2) =10 G=C^2 =9 H= -(-D)^2X(E-F)/4 = -(-2)^2X(6-10)/4 = -4 x -1 =4 I =2C-1 =5 B=[Ax(-2)-GX(-6)]/5 =[-14 +54]/5 =8 A=7, B=8, C=3 D=2, E=6 ,F=10 G=9, H=4 ,I=5 2 要畫圖...你自己加油 le條唔難係煩 用圓規 就可以畫到3角形 with 佢要既長度~~你應該識架la 3.ACIG is a parallelogram and AI is DIagonal so area of AIG = area of IAC (with same base,AC and IG)(SAME HEIGHT)<--要自己+一條 同base 成90度既線 ABED 都係parallelogram(ab//de , ad//be)(by def.) 同樣AED = EAB EFIH 都係parallelogram (ef//hi , eh//fi)(by def.) 而EIH = IEF area of AIG-AED-EIH=DEHG area of IAC-EAB-IEF=BCFE so DEHG=BCFE 方法如上 無check數= =太長....方法係咁 有可能會計錯(我指2+1 =2個d錯=.=..)
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