我希望标题“不规则三角形”出现在图表上方。但即使将文本插入到该部分上方,情况也不会如此。
代码:
\documentclass{article}
\usepackage{pstricks}
\usepackage{pst-node}
\usepackage{FiraMono}
\usepackage[T1]{fontenc}
\begin{document}
\section{Triangles}
\subsection{Scalene Triangle}
\newline
\begin{pspicture}(0,0)
\pspolygon(1,1)(3,4)(9,1) %triangle
\psline[linestyle=dashed](3,4)(3,1) %height
\pspolygon(3,1)(3,1.2)(3.2,1.2)(3.2,1) %right angle
\uput{0.1}[180](1,1){A}
\uput{0.1}[90](3,4){B}
\uput{0.1}[0](9,1){C}
\uput{0.2}[0](6,2.5){a}
\uput{0.2}[270](5,1){b}
\uput{0.2}[180](2,2.5){c}
\uput{0.2}[0](3,2.5){h}
\end{pspicture}
$$area = \sqrt{s(s-a)(s-b)(s-c)},\quad s = \frac{(a+b+c)}{2}$$
\subsection{Right Angled Triangle}
\end{document}
输出:
请忽略旧代码
我的代码:
\documentclass{article}
\usepackage{pstricks}
\usepackage{pst-node}
\usepackage{FiraMono}
\usepackage[T1]{fontenc}
\begin{document}
SCALENE TRIANGLE
\begin{pspicture}(0,0)
\pspolygon(1,1)(3,4)(9,1) %triangle
\psline[linestyle=dashed](3,4)(3,1) %height
\pspolygon(3,1)(3,1.2)(3.2,1.2)(3.2,1) %right angle
\uput{0.1}[180](1,1){A}
\uput{0.1}[90](3,4){B}
\uput{0.1}[0](9,1){C}
\uput{0.2}[0](6,2.5){a}
\uput{0.2}[270](5,1){b}
\uput{0.2}[180](2,2.5){c}
\uput{0.2}[0](3,2.5){h}
\end{pspicture}
$$area = \sqrt{s(s-a)(s-b)(s-c)},\quad s = \frac{(a+b+c)}{2}$$
\end{document}
输出:
答案1
我建议使用更短的代码pst-eucl
,专用于平面几何。无需坐标计算 - 仅使用 A、B、C 的坐标:
\documentclass[svgnames]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{pst-node, pst-eucl}
\usepackage{amsmath}
\usepackage{FiraMono}
\begin{document}
\section{Triangles}
\subsection{Scalene Triangle}
\begin{center}
\begin{pspicture*}(0.5,0.5)(9.5,4.5)
\psset{PointSymbol = none, RightAngleSize = 0.2, linecolor = NavyBlue}
\pstTriangle[PosAngle = {180,90,0}](1,1){A}(3,4){B}(9,1){C} %triangle
\pstProjection[CodeFig, linewidth = 0.4pt, CodeFigColor = Tomato]{A}{C}{B}[H]\naput{$ h $}
\psset{linestyle = none, labelsep = 2pt}
\ncline{B}{C}\naput{$a$}
\ncline{C}{A}\naput{$b$}
\ncline{A}{B}\naput{$c$}
\end{pspicture*}
\end{center}
\[ \text{area} = √{s(s-a)(s-b)(s-c)},\quad s = \frac{a+b+c}{2} \]
\end{document}
答案2
使用可选参数[showgrid]
。然后您将看到为图像保留了哪个矩形。如果一切正常,请设置showgrid=false
\documentclass{article}
\usepackage{pstricks}
\usepackage{pst-node}
\usepackage{FiraMono}
\usepackage[T1]{fontenc}
\begin{document}
\section{Triangles}
\subsection{Scalene Triangle}
\begin{pspicture}[showgrid](10,5)
\pspolygon(1,1)(3,4)(9,1) %triangle
\psline[linestyle=dashed](3,4)(3,1) %height
\pspolygon(3,1)(3,1.2)(3.2,1.2)(3.2,1) %right angle
\uput{0.1}[180](1,1){A}
\uput{0.1}[90](3,4){B}
\uput{0.1}[0](9,1){C}
\uput{0.2}[0](6,2.5){a}
\uput{0.2}[270](5,1){b}
\uput{0.2}[180](2,2.5){c}
\uput{0.2}[0](3,2.5){h}
\end{pspicture}
\[\textrm{area} = \sqrt{s(s-a)(s-b)(s-c)},\quad s = \frac{(a+b+c)}{2}\]
\subsection{Right Angled Triangle}
\end{document}