\input fig4tex.tex % % 1. Definition of characteristic points \figinit{2pt} \figpt 1:(-10,10) \figpt 2:(110,40) \figpt 3:(50,-10) \figptorthoprojline 11:$H_1\scriptstyle\figcoord2$=1/2,3/ \figptorthoprojline 12:$H_2\scriptstyle\figcoord2$=2/1,3/ \figptorthoprojline 13:$H_3\scriptstyle\figcoord2$=3/1,2/ % % 2. Creation of the graphical file \figdrawbegin{} \figdrawline[1,2,3,1] \def\Dim{5} \figset (color=\Redrgb) \figdrawaltitude \Dim[3,2,1] \figset altitude(bldash=7) \figdrawaltitude \Dim[1,3,2] \figdrawaltitude \Dim[2,3,1] \figdrawend % % 3. Writing text on the figure \figvisu{\figBoxA}{ \vbox{\hbox{The three altitudes in a triangle. $H_i$ is the foot of} \hbox{the altitude from $A_i, i=1,2,3$, with its coordinates.}}}{ \figwritenw 1:(2pt)\figwritee 2:(2pt)\figwrites 3:(4pt) \figwritese 11:(2pt)\figwritese 12:(2pt)\figwritege 13:(3pt,-0.1pt) } \box\figBoxA % \bye