\documentclass[a4paper]{jarticle}
\usepackage{emathP}
\begin{document}
\begin{zahyou*}[ul=4mm,haiti=t](0,12)(0,9)%
%%%%%%%%%%%%%%%%%%%%%%%%%
\tenretu{X(8,9)ne;O(0,0)w;Y(12,0)se;}%
%%%%%%%%%%%%%%%%%%%%%%%%%
\thicklines
\Drawline{\X\O\Y}%
\thinlines
\Enko\O{5}{-12}{65}
\CandL\O{5}\O\X\D\A
\CandL\O{5}\O\Y\D\B
\Put\A(0pt,8pt)[b]{A} 
\Put\B(6pt,-10pt)[b]{B}
\CandC\A{5.8}\B{5.8}\D\P
\Put\P(3pt,4pt)[b]{P} 
\thicklines
\Hantyokusen\O\P%
\thinlines
\Enko\A{5.8}{-15}{30}
\Enko\B{5.8}{30}{60}
\end{zahyou*}
\end{document}
\Hantyokusenを使ってこんなふうに書きます。

▼関連発言
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└◆3899:角の二等分線の作図 [zyam56] 11/10 07:08
　└◆3900:Re:角の二等分線の作図 [石原　守] 11/10 08:00
　　└◆3910:Re[2]:角の二等分線の作図 [zyam56] 11/10 19:30<-last