失礼しました。いじくっているうちに
\kuromaru
が
\Kuromaru
になっていました。
ソースは下記の通りです。

\documentclass[12pt]{jsarticle}
%\setlength{\topmargin}{60pt}
\iftombow
        \addtolength{\topmargin}{-1in}
\else
        \addtolength{\topmargin}{-1truein}
\fi
        \setlength{\textheight}{43\baselineskip}
\addtolength{\textheight}{\topskip}
\usepackage{emathP}
\usepackage{emathPs}
\begin{document}
\setlength\unitlength{1truecm}
\begin{center}
        {\large 家庭学習課題　数学}
\end{center}
\begin{flushright}
        平成１７年１１月３０(水)
\vspace{1zw}

        　　　　　年　　　組　氏名　　　　　　　　　　
\end{flushright}
\pagestyle{empty}
\begin{enumerate}
\item 下の図のように、3点A,B,Cがあるとき
        次の線を書きなさい。
        \begin{edaenumerate}<retusuu=1,gyoukan=1zw>[(1)]
                \item 直線BC
                \item 線分AC
        \end{edaenumerate}　
\begin{flushright}
\begin{picture}(5,-10)
\begin{pszahyou*}[ul=10mm]
        (0,7)(0,7)
\tenretu{A(2,3)n;B(0,0)n;C(5,0)n}
\kuromaru{\A;\B;\C}
%\def\A{(2,3)}\Put\A(8pt,8pt)[t]{A}
%\Kuromaru\A

\end{pszahyou*}
\end{picture}
\end{flushright}

\end{enumerate}

ログファイルは下記の通りです。

This is pTeX, Version 3.141592-p3.1.3 (sjis) (Web2C 7.5.2)
 \write18 enabled.
(./12_7.tex
pLaTeX2e <2001/09/04>+0 (based on LaTeX2e <2001/06/01> patch level 0)
(c:/usr/local/share/texmf/ptex/platex/js/jsarticle.cls
Document Class: jsarticle 2003/11/24 okumura
) (c:/usr/local/share/texmf/ptex/platex/misc/emath/emathP.sty
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathPp.sty
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathPh.sty
(c:/usr/local/share/texmf/jtex/latex209/tools/epic.sty
Enhancements to Picture Environment. Version 1.2 - Released June 1, 1986
) (c:/usr/local/share/texmf/jtex/latex209/tools/eepic.sty
Extension to Epic and LaTeX. Version 1.1b - Released Febrary 7, 1988
) (c:/usr/local/share/texmf/jtex/latex209/tools/eclarith.sty
eclarith.sty 1.1 --- July 1, 1992
) (c:/usr/local/share/texmf/ptex/platex/misc/emath/emath.sty
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emath2e.sty
(c:/usr/local/share/texmf/tex/latex/amslatex/amsmath.sty
For additional information on amsmath, use the `?' option.
(c:/usr/local/share/texmf/tex/latex/amslatex/amstext.sty
(c:/usr/local/share/texmf/tex/latex/amslatex/amsgen.sty))
(c:/usr/local/share/texmf/tex/latex/amslatex/amsbsy.sty)
(c:/usr/local/share/texmf/tex/latex/amslatex/amsopn.sty))
(c:/usr/local/share/texmf/tex/latex/amsfonts/amssymb.sty
(c:/usr/local/share/texmf/tex/latex/amsfonts/amsfonts.sty))
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathC.sty
(c:/usr/local/share/texmf/tex/latex/tools/calc.sty))
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathE.sty
(c:/usr/local/share/texmf/tex/latex/tools/enumerate.sty)
(c:/usr/local/share/texmf/tex/latex/graphics/keyval.sty)
(c:/usr/local/share/texmf/tex/latex/base/ifthen.sty)
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathMw.sty
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathLb.sty))
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathK.sty))))
(c:/usr/local/share/texmf/tex/latex/graphics/graphicx.sty
(c:/usr/local/share/texmf/tex/latex/graphics/graphics.sty
(c:/usr/local/share/texmf/tex/latex/graphics/trig.sty)
(c:/usr/local/share/texmf/tex/latex/config/graphics.cfg)
(c:/usr/local/share/texmf/tex/latex/graphics/dvips.def)))
(c:/usr/local/share/texmf/tex/latex/graphics/color.sty
(c:/usr/local/share/texmf/tex/latex/config/color.cfg)
(c:/usr/local/share/texmf/tex/latex/graphics/dvipsnam.def))))
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathPxy.sty)
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathPk.sty)
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathT.sty
(c:/usr/local/share/texmf/tex/latex/tools/array.sty)
(c:/usr/local/share/texmf/tex/latex/tools/hhline.sty)))
(c:/usr/local/share/texmf/ptex/platex/misc/emath/emathPs.sty
(c:/usr/local/share/texmf/tex/latex/tools/verbatim.sty)
(c:/usr/local/share/texmf/tex/latex/misc/lastpage.sty)) (./12_7.aux)
<./12_71.eps> AED: lastpage setting LastPage [1] (./12_7.aux)

LaTeX Warning: Label(s) may have changed. Rerun to get cross-references right.

 )
Output written on 12_7.dvi (1 page, 1100 bytes).
Transcript written on 12_7.log.

▼関連発言
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└◆4085:黒丸が描画されない [H.K] 12/07 14:30
　├◆4086:Re:黒丸が描画されない [H.K] 12/07 14:45
　└◆4087:Re:黒丸が描画されない [tDB] 12/07 14:59
　　├◆4088:Re[2]:黒丸が描画されない [tDB] 12/07 15:16
　　│└◆4090:Re[3]:黒丸が描画されない [H.K] 12/07 15:25
　　│　└◆4091:Re[4]:黒丸が描画されない [tDB] 12/07 15:35
　　│　　└◆4092:解決 [H.K] 12/07 16:02<-last
　　└◆4089:Re[2]:黒丸が描画されない [H.K] 12/07 15:17