ABSTRACT
We present in this section the well-known Euclidean parallelogram together with its vector addition law in order to set the stage for the gyroparallelogram and its gyrovector addition law in Sects. 6.2 and 6.3.
We present in this section the well-known Euclidean parallelogram together with its vector addition law in order to set the stage for the gyroparallelogram and its gyrovector addition law in Sects. 6.2 and 6.3.