RRGP-CoordinateSystems (robphy)
Relativity on Rotated Graph Paper - coordinate systems
Point-event Z is draggable.
Point-events A and B are draggable and define the velocities of Alice and Bob in this reference frame.
This is based on my recent paper
“Relativity on Rotated Graph Paper”, Am. J. Phys. 84, 344 (2016); http://dx.doi.org/10.1119/1.4943251 .
You can also refer to an informal blog contribution at
https://www.physicsforums.com/insights/relativity-rotated-graph-paper/