% --- start of displayed preamble in the book --- input metaobj % Circles produced as before % --- end of displayed preamble in the book --- newCircle.a(btex start etex); newCircle.b(btex end etex); a.c=origin; b.c-a.c=(3cm,1cm); defaultfont:="ptmr8r"; warningcheck:=0; beginfig(1) ncdiag(a)(b) "angleA(90)", "angleB(50)", "linecolor(blue)","linewidth(1pt)", "armA(3cm)","armB(2cm)"; drawObj(a,b); endfig; end;