please help me !! why when i rotate ......???

i am new on synfig my question is :
why when i rotate a caracter drawed (any shape not precisely) the outline is not smouth there are a zigzag???
thanks :frowning:

It is because you should rotate the vertexes and the tangents at the same time.
To toggle the tangents visibility press ALT-3.

thanks for the help :smiley: