<html><head><base href="x-msg://2740/"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The arcs should be smaller than Pi, otherwise there is a problem with indetermination. <div>Have a look at the corrected attached file.<div>Regards,</div><div>Ruth</div><div><br></div><div></div></div></body></html>