3 \subsection{Direct definition}
5 The object \Lkeyword{rightangle} allows us to specify and draw a
6 \Index{right angle}. The syntax is: \texttt{[object=rightangle,args=$A$
9 \begin{LTXexample}[width=7.5cm]
10 \begin{pspicture}(-3,-2.5)(3.5,2.5)%
11 \psframe*[linecolor=blue!50](-3,-2.5)(3.5,2.5)
12 \psset{lightsrc=viewpoint,viewpoint=50 30 15,Decran=40}
14 %% definition du plan de projection
24 \psset{plan=monplan,visibility=false}
25 %% definition droite d
26 \psProjection[object=droite,
27 definition=horizontale,
30 %% definition du point M
31 \psProjection[object=point,
35 %% definition du point H
36 \psProjection[object=point,
41 %% definition du point H' pour orienter l'angle droit
42 %% et mettre la legende
43 \psProjection[object=point,
48 %% definition d'une ligne
49 \psProjection[object=line,
52 \psProjection[object=rightangle,
55 %\axesIIID(4,4,2)(5,5,6)