%% %% The LaTeX Graphics Companion, 2ed (first printing May 2007) %% %% Example 6-7-15 on page 426. %% %% Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss %% %% It may be distributed and/or modified under the conditions %% of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% %% See http://www.latex-project.org/lppl.txt for details. %% \documentclass{ttctexagray} \pagestyle{empty} \setcounter{page}{6} \setlength\textwidth{207.83385pt} \StartShownPreambleCommands \usepackage{pstricks,pst-eucl} \StopShownPreambleCommands \begin{document} \psset{unit=1.5} \begin{pspicture}(-2.5,-1.75)(2.75,2.5) \pstTriangle[PosAngleA=180, PosAngleC=0](-2,-1){A}(1,2){B}(2,-1){C} { \psset{linestyle=none, PointSymbolB=none} \pstMediatorAB{B}{A}{I}{IP} \pstMediatorAB[PosAngleA=-40]{A}{C}{J}{JP} \pstMediatorAB[PosAngleA=75]{B}{C}{K}{KP} } \pstInterLL[PointSymbol=square, PosAngle=-170]{I}{IP}{J}{JP}{O} { \psset{nodesep=-.8,linecolor=green} \pstLineAB{O}{I}\pstLineAB{O}{J}\pstLineAB{O}{K} } \psdot[dotstyle=square](O) \pstProjection[PosAngle=95]{B}{A}{C}{C'}\pstProjection{B}{C}{A}{A'} \pstProjection[PosAngle=-90]{A}{C}{B}{B'} \psset{linecolor=blue}\ncline{A}{A'}\ncline{C}{C'}\ncline{B}{B'} \pstInterLL[PointSymbol=square]{A}{A'}{B}{B'}{H} \psset{linecolor=magenta}\ncline{A}{K}\ncline{C}{I}\ncline{B}{J} \pstMiddleAB[PointSymbol=o, PointName=\omega]{O}{H}{omega} \pstCircleOA[linecolor=cyan, linestyle=dashed, dash=5mm 1mm]{omega}{B'} \empty \psset{PointName=none} \pstMiddleAB{H}{A}{AH}\pstMiddleAB{H}{B}{BH}\pstMiddleAB{H}{C}{CH} \pstSegmentMark{H}{AH}\pstSegmentMark{AH}{A} \psset{SegmentSymbol=wedge}\pstSegmentMark{H}{BH}\pstSegmentMark{BH}{B} \psset{SegmentSymbol=cup}\pstSegmentMark{H}{CH}\pstSegmentMark{CH}{C} \end{pspicture} \end{document}