Join two arc to 1 arc

[hoathuongphuoc]

Hi All,

I am meetting 1 problem and hope everyone can help me. This is, i have 1 polyline it include: lines and 2 arc. And now. i want to join 2 this arc to 1 arc. I have asked this problem in this forum but i can't find the best answer. And now. i have attached image and file cad. Thanks everybody.

[SENL1362]

if c1==c2 AND r1==r2 then
if pe1==ps2 then
ps2=ps1
arc1.remove
elseif pe2==ps1 then
...
else
// test overlapping arc's
endif
endif