【UVa 11178 (简单练习) Morley's Theorem】的更多相关文章

UVa 11178 (简单练习) Morley's Theorem

题意: Morley定理:任意三角形中,每个角的三等分线,相交出来的三个点构成一个正三角形. 不过这和题目关系不大,题目所求是正三角形的三个点的坐标,保留6位小数. 分析: 由于对称性,求出D点,EF也是同样的. 用点和向量的形式表示一条直线,向量BA.BC的夹角为a1,则将BC逆时针旋转a1/3可求得 直线BD,同理也可求得直线CD,最后再求交点即可. //#define LOCAL #include <cstdio> #include <cstring> #include &l…

uva 11178 - Morley's Theorem

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2119 11178 - Morley's Theorem Time limit: 3.000 seconds Problem DMorley’s TheoremInput: Standard Input Output: Standard Output Morley’s theorem stat…

UVA 11178 Morley's Theorem (坐标旋转)

题目链接:UVA 11178 Description Input Output Sample Input Sample Output Solution 题意 \(Morley's\ theorem\) 指任意三角形的每个内角的三等分线相交的三角形为等边三角形. 给出三角形的每个点的坐标,求根据 \(Morley's\ theorem\) 构造的等边三角形的三个点的坐标. 题解 对于点 \(D\),只需求直线 \(BC\) 绕点 \(B\) 旋转 \(\frac{1}{3} \angle ABC\…

UVA 11178 Morley's Theorem(几何)

Morley's Theorem [题目链接]Morley's Theorem [题目类型]几何 &题解: 蓝书P259 简单的几何模拟,但要熟练的应用模板,还有注意模板的适用范围和传参不要传混了 &代码: #include <bits/stdc++.h> using namespace std; #define INF 0x3f3f3f3f typedef long long ll; const int maxn= 1e3 +7; //蓝书P255 //1.点的定义 stru…

uva 11178 Morley&#39;s Theorem（计算几何-点和直线）

Problem D Morley's Theorem Input: Standard Input Output: Standard Output Morley's theorem states that that the lines trisecting the angles of an arbitrary plane triangle meet at the vertices of an equilateral triangle. For example in the figure below…

UVa 11178:Morley’s Theorem（两射线交点）

Problem DMorley’s TheoremInput: Standard Input Output: Standard Output Morley’s theorem states that that the lines trisecting the angles of an arbitrary plane triangle meet at the vertices of an equilateral triangle. For example in the figure below t…

uva11178 Morley’s Theorem（求三角形的角三分线围成三角形的点）

Morley’s Theorem Input: Standard Input Output: Standard Output Morley’s theorem states that that the lines trisecting the angles of an arbitrary plane triangle meet at the vertices of an equilateral triangle. For example in the figure below the tri-s…

uva 11178二维几何（点与直线、点积叉积）

Problem D Morley’s Theorem Input: Standard Input Output: Standard Output Morley’s theorem states that that the lines trisecting the angles of an arbitrary plane triangle meet at the vertices of an equilateral triangle. For example in the figure below…

简单几何(求交点) UVA 11178 Morley's Theorem

题目传送门 题意:莫雷定理,求三个点的坐标 分析:训练指南P259,用到了求角度,向量旋转,求射线交点 /************************************************ * Author :Running_Time * Created Time :2015/10/21 星期三 15:56:27 * File Name :UVA_11178.cpp ************************************************/ #include…

UVA 11178 - Morley's Theorem 向量

http://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=2119 题目大意: Morley定理是这样定义的,做三角形ABC每个内角的三等分线,相交成三角形DEF,则DEF是等边三角形.如图,你的任务是根据A,B,C三个点的位置确定D.E.F的位置. 思路: 把BC边旋转三分之一的角ABC,CB边旋转三分之一的角ACB,然后求交点D就出来了.其他的同理…