javascript libraries vector diagram poly arc linkage lined wire vector diagram lined pen path type adjustable reusable selections Drawing curves straight line line segment Bézier Curves Paths Pen Tool straight lines direction handles corner symbol arrows Straight line vector diagram lined pen path type adjustable reusable selections

 http://lam-animation.weebly.com/pen-tool.html

 http://lam-animation.weebly.com/pen-tool.html

 https://photoshopcafe.com/tutorials/pen/pen.htm

https://www.adobepress.com/articles/article.asp?p=2995345&seqNum=4

 https://www.automotiveillustrations.com/tutorials/adobe-illustrator-paths-pen-tool.html

http://lam-animation.weebly.com/pen-tool.html 

straight lines direction handles corner points   path direction

vector diagram lined pen path type adjustable reusable selections

straight lines direction handles corner symbol arrows Straight line

Straight line with arrow from start to finish points.
Symbol of direction, aim, target, path, Vector flat illustration