using?System;
using?System.Configuration;
using?System.Data.SqlClient;
using?System.Windows.Forms;


namespace?WindowsFormsApplication1
{

????public?partial?class?Form1?:?Form
????{
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}
????????Point?p1;
????????Point?p2;
????????Point?p3;
????????private?static?Point?GetPiontByThree（Point?p1?Point?p2?Point?p3）
????????{
????????????/*?Math.Pow（y1-Y）+Math.Pow（X-x1）=Math.Pow（D1）???
?????????????*?Math.Pow（y2-Y）+Math.Pow（X-x2）=Math.Pow（D2）?
?????????????*?Math.Pow（y3-Y）+Math.Pow（X-x3）=Math.Pow（D3）?
?????????????*?1-3.2-3解得：?
?????????????*?2?*?（p1.X?-?p3.X）x?+?2?*?（p1.Y?-?p3.Y）y?=?Math.Pow（p1.X?2）?-?Math.Pow（p3.X?2）?+?Math.Pow（p1.Y?2）?-?Math.Pow（p3.Y?2）?+?Math.Pow（p3.Distance?2）?-?Math.Pow（p1.Distance?2）;?
?????????????*?2?*?（p2.X?-?p3.X）x?+?2?*?（p2.Y?-?p3.Y）y?=?Math.Pow（p2.X?2）?-?Math.Pow（p3.X?2）?+?Math.Pow（p2.Y?2）?-?Math.Pow（p3.Y?2）?+?Math.Pow（p3.Distance?2）?-?Math.Pow（p2.Distance?2）;?
?????????????*?簡化：?
?????????????*?2Ax+2By=C?
?????????????*?2Dx+2Ey=F?
?????????????*?簡化：??
?????????????*?x=（BF-EC）/（2BD-2AE）?
?????????????*?y=（AF-DC）/（2AE-2BD）?
?????????????*/
????????????var?A?=?p1.X?-?p3.X;
????????????var?B?=?p1.Y?-?p3.Y;
????????????var?C?=?Math.Pow（p1.X?2）?-?Math.Pow（p3.X?2）?+?Math.Pow（p1.Y?2）?-?Math.Pow（p3.Y?2）?+?Math.Pow（p3.Distance?2）?-?Math.Pow（p1.Distance?2）;
????????????var?D?=?p2.X?-?p3.X;
????????????var?E?=?p2.Y?-?p3.Y;
????????????var?F?=?Math.Pow（p2.X?2）?-?Math.Pow（p3.X?2）?+?Math.Pow（p2.Y?2）?-?Math.Pow（p3.Y?2）?+?Math.Pow（p3.Distance?2）?-?Math.Pow（p2.Distance?2）;

????????????var?x?=?（B?*?F?-?E?*?C）?/?（2?*?B?*?D?-?2?*?A?*?E）;
????????????var?y?=?（A?*?F?-?D?*?C）?/?（2?*?A?*?E?-?2?*?B?*?D）;

????????????Point?P?=?new?Point（）?{?X?=?x?Y?=?y?Distance?=?0?};
????????????return?P;
????????}


????????private?void?Form1_Shown（object?sender?EventArgs?e）
????????{

????????}

????????private?void?button1_Click（object?sender?EventArgs?e）
????????{
????????????p1?=?new?Point（）?{?X?=?10?Y?=?0?Distance?=?Convert.ToDouble（tbx1.Text）?};
????????????p2?=?new?Point（）?{?X?=?0?Y?=?10?Distance?=?Convert.ToDouble（tbx2.Text）?};
????????????p3?=?new?Point（）?{?X?=?10?Y?=?10?Distance?=?Convert.ToDouble（tbx3.Text）?};

????????????var?p?=?GetPiontByThree（p1?p2?p3）;
????????????tbx7.Text?=?p.X.ToString（）;
????????????tbx8.Text?=?p.Y.ToString（）;
????????????//Console.WriteLine（“Point?x:{0}“?p.X）;
????????????//Console.WriteLine（“Point?y:{0}“?p.Y）;
????????}

????}//end?Form1

????public?class?Point
????{
????????public?double?X?{?get;?set;?}
????????public?double?Y?{?get;?set;?}
????????//表示指定點，據此點的距離??
????????public?double?Distance?{?get;?set;?}
????????
????}
????

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????954??2018-03-20?15:40??Trigonometric\.git\config

?????文件?????????73??2018-03-20?12:44??Trigonometric\.git\description

?????文件????????115??2018-03-20?15:40??Trigonometric\.git\FETCH_HEAD

?????文件?????????23??2018-03-20?12:44??Trigonometric\.git\HEAD

?????文件????????177??2018-03-20?12:44??Trigonometric\.git\hooks\README.sample

?????文件???????1632??2018-03-20?15:40??Trigonometric\.git\index

?????文件????????113??2018-03-20?12:44??Trigonometric\.git\info\exclude

?????文件????????587??2018-03-20?15:40??Trigonometric\.git\logs\HEAD

?????文件????????587??2018-03-20?15:40??Trigonometric\.git\logs\refs\heads\master

?????文件????????140??2018-03-20?15:40??Trigonometric\.git\logs\refs\remotes\origin\master

?????文件????????167??2018-07-01?16:27??Trigonometric\.git\ms-persist.xml

?????文件????????145??2018-03-20?12:44??Trigonometric\.git\objects\04\17e2b50c85c21a1bd8c66751e2da6b947edcbd

?????文件?????????89??2018-03-20?12:44??Trigonometric\.git\objects\0d\76fe4328089e5b63a9c4190badacfc35ef2624

?????文件????????172??2018-03-20?12:47??Trigonometric\.git\objects\13\ae0bcba77c16e7b9c2c351358ca341aafc68e1

?????文件???????1665??2018-03-20?12:44??Trigonometric\.git\objects\1a\f7de150c99c12dd67a509fe57c10d63e4eeb04

?????文件???????1863??2018-03-20?12:44??Trigonometric\.git\objects\1c\9a181a44b4f9a105f0dc71a40ad0284ab6a7c4

?????文件????????751??2018-03-20?12:44??Trigonometric\.git\objects\1f\f0c423042b46cb1d617b81efb715defbe8054d

?????文件???????1283??2018-03-20?12:44??Trigonometric\.git\objects\23\7a0ff8333b6b919bcbe6b63582d77bec197b83

?????文件????????309??2018-03-20?12:44??Trigonometric\.git\objects\33\8450bf3fdbab7faa1d11ba3ef5b821cb212b70

?????文件????????186??2018-03-20?12:44??Trigonometric\.git\objects\39\645652af62950ebf3b28ec3a5400dcec30b1c4

?????文件????????172??2018-03-20?15:40??Trigonometric\.git\objects\48\95628ad26df21b012b6258a205883a4ed2d8b7

?????文件????????144??2018-03-20?15:40??Trigonometric\.git\objects\62\7429707c6c23d1ea8db4b9b67a32412ca98749

?????文件????????171??2018-03-20?12:44??Trigonometric\.git\objects\64\be14336675c0daafd8223bbaf380c3f21cff86

?????文件????????728??2018-03-20?12:44??Trigonometric\.git\objects\75\9a490aa8f6352f95d0638164c921715213abba

?????文件?????????75??2018-03-20?12:44??Trigonometric\.git\objects\7b\894197b9d8d79b2ad4afafc2c11c60f33c4b42

?????文件????????405??2018-03-20?12:44??Trigonometric\.git\objects\83\eef793d16be3ec4d5dc1bfb3d72e25ea06f014

?????文件????????153??2018-03-20?12:44??Trigonometric\.git\objects\88\fa4027bda397de6bf19f0940e5dd6026c877f9

?????文件???????1147??2018-03-20?12:44??Trigonometric\.git\objects\8c\4e379d7a9db3aa2443efc22173e3db1b94c667

?????文件????????956??2018-03-20?12:44??Trigonometric\.git\objects\99\099da06b8075be7d3d63438bcfdf0914906400

?????文件????????309??2018-03-20?15:40??Trigonometric\.git\objects\ab\e9ef90702a2de86fedb8ec039458ed66b1c712

............此處省略109個文件信息