Translations:Sketcher ConstrainCoincident/21/en

The vertices of one line can only have the value 1 or 2. (Note that the vertices numbering does not start from 0, this is because with regards to Constraints 0= Edge hence not a vertex, 1 = starting point vertex, 2 = end point vertex, 3 = midpoint which is not a vertex) The vertices are numbered according to their order of creation. To find out the order of their creation (If you have a lot of lines, you cannot remember which vertex you have created first), you just have to move the cursor of your mouse above the two vertices of one line, see following figure.