I have this useful app. (Kind of tricky for me... 

 ) Pretty easy to build a 90 degree turn, for example, with the radius of 10m. Just move control points (sliders) by 5.52m after adding a vertex 10m away. 
When I want to shape a 60 degree turn with the same radius, this tool asks me to move sliders by 3.57m...  

Anyone good at using this function?
 
            
                        -- I was happy to be with NL1. --
Personal coaster count as of 3/2025 -- 222
"500" perhaps by the end of this year.
I will be a Thai citizen if possible in a few years.