java計(jì)算三角形的外心 java三角形面積代碼
(XB,Yb,和(Xc,Yb,Yb)(Xc,Yc,(Xc,Yc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(X
(XB,Yb,和(Xc,Yb,Yb)(Xc,Yc,(Xc,Yc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,Yc)(Xc,(X-Xa)(X-Xa)(X-Xa)^ 2(Y-Ya)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(Y-Ya)^ 2(Y-Ya)^ 2(Y-Ya)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X-Xc)^ 2(X 2(x-xc)2(y-yc)^ ya)^ 2=(x-xb)^ 2(y-yb)^ 2=>-2xa ^ 2-2ya和ya ^ 2=-2xb×XB ^ 2-2yb和yb ^ 2=> 2(xa-xb)x 2(ya-yb)y=xa ^ 2 ya2-xb ^ 2-yb ^ 2-(-1)治療結(jié)果2(xc-xb)x 2(yc-yb),如下所示:x=△x/△x,和Y=△Y/△Y-△Y-△Y-△Y-△Y-△Y-△Y deltacenter△=2(xa-xb)(yc-yb)(yc-yb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xb)(xc-xc-xb)(xc-xc-xb)(xc-xc-xb)(xc-xc-xb)(xc-xc-xb)(xc-xc-xb)(xc-xc-(如果我們得到:x=x=(x=(x=(x)x=x=(x),我們將是:x=x=(x=(x))最后一個(gè),我們將在這里,我們得到以下結(jié)果:我們得到以下結(jié)果:x=^ 2-yb ^ 2-yb ^ 2-yb ^ 2-yb ^ 2-yb ^ 2-yb ^ 2-yb ^ 2-y2yc ^ 2-xb ^ 2-yb ^ 2)△y=(xa xb)(xc ^ 2-yc ^ 2-xb ^ 2-yb ^ 2)-(xc xb)(xa ^ 2 ya ^ 2-xb ^ 2-yb 2)