奖金

Question

以下是我的代码的摘录：

\begin{tikzpicture}[scale=5.5]
    \coordinate[label=left:$A$]  (A) at (0,0);
    \coordinate[label=right:$B$]  (B) at (1,0);
    \coordinate[label=:$C$]  (C) at (0.5,0.866);
    \draw[] (A)--(B)--(C)--(A);
    \end{tikzpicture}

我想用刻度标记表示 AB=BC。另外，点 C 不在它应该在的位置。我该如何解决这个问题？我将 sqrt(3)/2 四舍五入为 0.866。最后一件事：我只想要单个刻度标记。

Answer 1

欢迎使用 TeX.SE！您可以使用 添加这些标记decorations.markings。由于您需要两个，.list因此使用 键更快捷。此外，Ti钾Z 理解极坐标，它也理解(0.5,{sqrt(3)/2})，所以不需要挖出你的计算器。;-)

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{decorations.markings}
\begin{document}
\begin{tikzpicture}[scale=5.5,equal mark/.style={postaction={decorate,
decoration={markings,mark=at position #1 with {\draw (-2pt,-4pt) -- (-2pt,4pt);
\draw (2pt,-4pt) -- (2pt,4pt);}}}}]
    \coordinate[label=left:$A$]  (A) at (0,0);
    \coordinate[label=right:$B$]  (B) at (1,0);
    \coordinate[label=:$C$]  (C) at (60:1);
    \draw[equal mark/.list={1/6,1/2}] (A)--(B)--(C)--cycle;
\end{tikzpicture}
\end{document}  

如您所见，此代码以 开头\documentclass并以 结尾\end{document}，并且可以编译。

您可以使用循环简化/缩短代码\foreach。

\documentclass[tikz,border=3.14mm]{standalone}
\usetikzlibrary{decorations.markings}
\begin{document}
\begin{tikzpicture}[scale=5.5,equal mark/.style={postaction={decorate,
decoration={markings,mark=at position #1 with {\draw (-2pt,-4pt) -- (-2pt,4pt);
\draw (2pt,-4pt) -- (2pt,4pt);}}}}]
    \foreach \X/\Y in {210/A,-30/B,90/C} 
    {\coordinate[label=\X:$\Y$]  (\Y) at (\X:{1/sqrt(3)});}
    \draw[equal mark/.list={1/6,1/2,5/6}] (A)--(B)--(C)--cycle;
\end{tikzpicture}
\end{document}  

Answer 2

PSTricks 解决方案仅用于好玩的目的。

\documentclass[pstricks,12pt,border=1cm]{standalone}
\usepackage{pst-eucl}
\begin{document}
\pspicture[MarkAngle=90](-4,4)
    \pstTriangle(4;150){C}(-4,0){A}(0,0){B}
    \pstSegmentMark{A}{B}
    \pstSegmentMark{B}{C}
\endpspicture
\end{document}

奖金

\documentclass[pstricks,12pt,border=1cm]{standalone}
\usepackage{pst-eucl}
\begin{document}
\foreach \i in {90,100,...,170}{%
\pspicture[MarkAngle=90](-4,4)
    \pstTriangle(4;\i){C}(-4,0){A}(0,0){B}
    \pstSegmentMark{A}{B}
    \pstSegmentMark{B}{C}
\endpspicture}
\end{document}

Answer 3

还有一个tikz解决方案。在节点中使用数学符号来标记\|，选项sloped放在线上：

\documentclass[tikz,border=3.141592mm]{standalone}

\begin{document}
    \begin{tikzpicture}[scale=5.5]
\coordinate[label=left:$A$]     (A) at (0,0);
\coordinate[label=right:$B$]    (B) at (1,0);
\coordinate[label=$C$]          (C) at (0.5,0.866);
\draw (A) -- node {$\|$} (B) -- node[sloped] {$\|$} (C) -- (A);
    \end{tikzpicture}
\end{document}

现在tikz版本 3.1 正在miktex开发中......