Vector version of Triquetra-circle-interlaced.png, converted from the following PostScript code:

%!
0 365 translate 6 dup scale/!{def}def/s{setrgbcolor}!
/l{stroke}!/S{3 sqrt mul}!/k{0 0 0 s 5.6 setlinewidth}!
/C{50 50 3 sqrt div 19.4}!/K{1 1 1 s 2.8 setlinewidth}!
/C2{25 3 sqrt div}!/C3{25 8.5 cos div}!
/C4{C3 8.5 sin mul}!/C5{50 C2 C4 sub C3}!
/C6{62.5 C4 S 2 div add C2 12.5 S add C4 2 div add C3}!
/C7{37.5 C4 S 2 div sub C2 12.5 S add C4 2 div add C3}!
k C 0 360 arc closepath l K C 0 360 arc closepath l
k C5 4.0925 175.9075 arc l C7 -115.9075 55.9075 arc l
C6 124.0925 -64.0925 arc l K C5 6.149 173.851 arc l
C7 -113.851 53.851 arc l C6 126.149 -66.149 arc l
k C5 106 117 arc l C7 -14 -3 arc l C6 226 237 arc l
C 48 80 arc l C 168 200 arc l C 288 320 arc l
K C5 105 118 arc l C7 -15 -2 arc l C6 225 238 arc l
C 46 82 arc l C 166 202 arc l C 286 322 arc l showpage
%EOF