锟斤拷锟斤拷直锟斤拷锟斤拷锟斤拷锟斤拷要锟斤拷锟斤拷一锟斤拷式锟斤拷锟絚斜式锟斤拷斜锟斤拷式锟斤拷锟斤拷锟絚式锟斤拷锟截撅拷式锟斤拷N锟斤拷锟斤拷锟絯锟斤拷式锟斤拷锟斤拷锟斤拷一锟斤拷锟斤拷锟斤拷锟缴ｏ拷

锟斤拷锟斤拷1直锟斤拷锟斤拷锟教碉拷锟斤拷N锟斤拷式

锟斤拷锟斤拷1锟斤拷锟絚斜式锟斤拷锟斤拷知直锟斤拷锟絕锟絚(x0锟斤拷y0)锟斤拷斜锟绞烇拷k锟斤拷锟絫直锟斤拷锟斤拷锟教烇拷y锟斤拷y0锟斤拷k(x锟斤拷x0)锟斤拷

锟斤拷锟斤拷2锟斤拷斜锟斤拷式锟斤拷锟斤拷知直锟斤拷锟斤拷y锟絊锟较的截撅拷锟斤拷b锟斤拷斜锟绞烇拷k锟斤拷锟絫直锟斤拷锟斤拷锟教烇拷y锟斤拷kx锟斤拷b

锟斤拷锟斤拷3锟斤拷锟斤拷锟絚式锟斤拷锟斤拷知一锟絣直锟斤拷锟斤拷(j锟斤拷ng)锟絕P1(x1锟斤拷y1)锟斤拷P2(x2锟斤拷y2)锟斤拷锟絚锟斤拷锟絫直锟斤拷锟斤拷锟教烇拷x-x1/x2-x1锟斤拷y(t锟斤拷ng)-y1/y2-y1锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷直锟斤拷锟斤拷锟斤拷(bi锟斤拷o)锟絊锟斤拷直锟斤拷锟斤拷

锟斤拷锟斤拷4锟斤拷锟截撅拷式锟斤拷锟斤拷知直锟斤拷锟斤拷x锟絊锟斤拷y锟絊锟较的截撅拷锟斤拷a锟斤拷b锟斤拷锟絫直锟斤拷锟斤拷锟教烇拷x/a锟斤拷y/b锟斤拷1

锟斤拷锟斤拷5锟斤拷一锟斤拷式锟斤拷锟轿猴拷直锟斤拷锟斤拷锟缴岋拷锟斤拷Ax锟斤拷By锟斤拷C锟斤拷0(A锟斤拷B锟斤拷同锟絩锟斤拷0)锟斤拷锟斤拷式锟斤拷

锟斤拷锟斤拷2直锟斤拷锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)知锟絉锟絚

锟斤拷锟斤拷锟襟對稱锟紻锟斤拷

锟斤拷锟斤拷锟斤拷锟絚锟斤拷x1,y1锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絚(x0,y0)锟斤拷锟絈锟斤拷锟絚锟斤拷锟斤拷2x0-x1,2y0-y1)

锟斤拷锟�锟斤拷锟斤拷c锟斤拷x0,y0锟斤拷锟絇(gu锟斤拷n)锟斤拷直锟斤拷Ax+By+C=0锟斤拷锟絈锟斤拷锟絚锟斤拷

锟斤拷锟斤拷( x0-2A(Ax0+By0+C)/(A^2+B^2) 锟斤拷y0-2B(Ax0+By0+C)/(A^2+B^2) )

锟斤拷锟�锟斤拷锟街憋拷锟統=kx+b锟絇(gu锟斤拷n)锟斤拷锟絚锟斤拷x0,y0锟斤拷锟斤拷锟絈锟斤拷直锟斤拷锟斤拷y-2y0=k(x-2x0)-b

锟斤拷锟斤拷锟斤拷直锟斤拷1锟絇(gu锟斤拷n)锟节诧拷平锟叫碉拷直锟斤拷2锟斤拷锟絈锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷锟斤拷平锟街撅拷锟斤拷

锟斤拷锟斤拷锟襟對稱锟絊

锟斤拷锟�锟斤拷艃锟斤拷c锟侥岋拷锟絈锟絚锟斤拷锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷(bi锟斤拷o)

锟斤拷锟�锟斤拷苾锟斤拷c锟侥岋拷锟絈锟絊锟斤拷锟斤拷锟斤拷锟斤拷锟絚锟斤拷锟斤拷(bi锟斤拷o)锟斤拷锟襟線讹拷斜锟绞�锟斤拷锟斤拷c锟斤拷锟轿达拷直锟侥岋拷锟絈锟絊斜锟绞�锟斤拷c斜式

锟斤拷锟�锟斤拷莾蓷l平锟叫撅拷锟侥岋拷锟絈锟絊锟斤拷锟斤拷锟絆(sh锟斤拷)P锟斤拷x,y锟斤拷锟节岋拷锟絈锟絊锟较�锟斤拷O(sh锟斤拷)锟斤拷锟斤拷d(Pl1)=d(Pl2)

锟斤拷锟�锟斤拷葍蓷l锟洁交锟揭诧拷锟斤拷直锟斤拷直锟斤拷锟侥岋拷锟絈锟絊锟斤拷锟劫斤拷平锟街撅拷斜锟绞癸拷式锟斤拷k0k1=-1锟斤拷锟斤拷锟絚锟斤拷锟絚斜式

锟斤拷锟斤拷锟斤拷锟絇(gu锟斤拷n)锟斤拷锟絔锟斤拷

锟斤拷锟斤拷锟竭匡拷锟斤拷(sh锟斤拷)锟絎(xu锟斤拷)知锟絉锟絚锟絉锟斤拷

锟斤拷锟斤拷牛锟皆草嗭拷锟絵锟侥癸拷式锟斤拷?

锟斤拷锟铰高匡拷锟結訊锟斤拷锟竭匡拷锟斤拷锟斤拷锟斤拷锟斤拷前锟斤拷(zh锟斤拷n)锟戒、志愿锟斤拷锟�锟斤拷锟饺★拷謹锟�(sh锟斤拷)锟斤拷锟斤拷

锟竭匡拷锟絩锟絞锟斤拷锟斤拷全锟斤拷锟斤拷要锟斤拷(ji锟斤拷)锟絚

锟組锟斤拷"锟竭匡拷锟絎(w锟斤拷ng)"微锟脚癸拷锟斤拷號