hard to get a position

There is a stick. I want to move this stick as long as the length of the stick with the same angle.
Can anyone help me how to do this? It looks simple but not to me ㅜㅜ

For example, the stick’s two positions are (0, 0, 0) and (1, 1, 0). I want to put the stick at (1, 1, 0) and (2, 2, 0).
same angle and same distance (the length of the stick). Actually I want to rotate the stick by 180 degree.
Sorry for my bad english.

if you rotate the stick it is no longer at the same angle…

the answer to your question is probably :

Vector3 stickSize = new Vector3(1f,1f,0f);

transform.position += stickSize;