1/ Set a permanent snap mode extremity+centre
2/ Draw the line from an extremity of the arc
3/ move the cursor on the centre of the arc, but don't click
4/ type in the length of the line, in negative mode (-50 for a length of 50
for example)
That's it!
Patrick EMIN,
CAD specialist at
Hi Tech Partners International 213 rue de Gerland
69007 Lyon FRANCE