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双倍垂直间距：如何解决这个问题？

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双倍垂直间距：如何解决这个问题？

考虑以下 ：

\documentclass[12pt]{report}
\usepackage{amsmath, amssymb, amsthm}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{shadows}
\newcommand*\squared[1]{\tikz[baseline=(char.base)]{\node[shape=rectangle, draw, inner color = white, drop shadow = {opaque, black}, inner sep=3pt, text justified] (char) {#1};}}

\newtheoremstyle{exercise}
  {\topsep}
  {\topsep}
  {\hangindent=2em}
  {}
  {}
  {}
  {.8em}
  {\squared{\thmnumber{#2}}}

\theoremstyle{exercise}
\newtheorem{exercise}{}

\renewcommand{\arraystretch}{1.75}
\usepackage{tabularx}

\begin{document}

\begin{exercise}
    \begin{tabularx}{\textwidth}[t]{r @{\hskip .4em} X}
        a) & This is a test. \\
        b) & I say
        $$
            \pi \approx 3.14.
        $$ \\
        c) & Do you agree?
    \end{tabularx}
\end{exercise}

\end{document}

似乎 b) 以数学模式结束会在 c) 之前增加额外的垂直间距。但我希望间距是均匀的。也就是说，我希望 b) 和 c) 之前有相同的垂直间距。如何做到？

答案1

你的选择不多。

第一个方法是将等式添加到一行中：

\documentclass[12pt]{report}
\usepackage{amsmath, amssymb, amsthm}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{shadows}
\newcommand*\squared[1]{\tikz[baseline=(char.base)]{\node[shape=rectangle, draw, inner color = white, drop shadow = {opaque, black}, inner sep=3pt, text justified] (char) {#1};}}

\newtheoremstyle{exercise}
  {\topsep}
  {\topsep}
  {\hangindent=2em}
  {}
  {}
  {}
  {.8em}
  {\squared{\thmnumber{#2}}}

\theoremstyle{exercise}
\newtheorem{exercise}{}

\renewcommand{\arraystretch}{1.75}
\usepackage{tabularx}

\begin{document}

\begin{exercise}
    \begin{tabularx}{\textwidth}[t]{r @{\hskip .4em} X}
        a) & This is a test. \\
        b) & I say \\
           &
            \hfil $\pi \approx 3.14$.
            \\
        c) & Do you agree?
    \end{tabularx}
\end{exercise}
\end{document}

在此处输入图片描述

然而，我觉得在对练习环境进行一些修改之后，列表枚举会是更好的方法。

这里还有一些补充。这些并不完美，因为被修改了，并且\arraystretch的宽度没有准确计算。不过，它可以作为一个起点。\parbox\minipage

\documentclass[12pt]{report}
\usepackage{amsmath, amssymb, amsthm}
\usepackage{lipsum}

\usepackage{tikz}
\usetikzlibrary{shadows}
\newcommand*\squared[1]{\tikz[baseline=(char.base)]{\node[shape=rectangle, draw, inner color = white, drop shadow = {opaque, black}, inner sep=3pt, text justified] (char) {#1};}}

\newtheoremstyle{exercise}
  {\topsep}
  {\topsep}
  {\hangindent=2em}
  {}
  {}
  {}
  {.8em}
  {\squared{\thmnumber{#2}}}

\theoremstyle{exercise}
\newtheorem{exercise}{}

\renewcommand{\arraystretch}{1.75}
\usepackage{tabularx,enumitem,showframe}

\begin{document}

\begin{exercise}
    \begin{tabularx}{\dimexpr\textwidth-2.8em\relax}[t]{@{\,}r @{\hskip .4em} X}
        a) & This is a test. \\
        b) & I say \parbox[t]{0.88\linewidth}{%
           \[
            π\approx 3.14.
           \]
           }\\
        c) & Do you agree?
    \end{tabularx}
\end{exercise}
\begin{exercise}
    \begin{minipage}[t]{0.928\linewidth}
     \begin{enumerate}[label = \alph*),leftmargin=*,topsep=0pt,partopsep=0pt]
        \item This is a test.
        \item I say
           \[
            π\approx 3.14.
            \]
        \item Do you agree?
    \end{enumerate}
    \end{minipage}%
\end{exercise}
\end{document}

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