The image shows a diagram illustrating the rotation of a cube. There are two depictions of a cube, labeled '1' and '2'. **Cube 1:** This cube is shown in a perspective view, as if it's being rotated around a vertical axis. The faces of the cube are labeled with abbreviations: 'p', 'r', 'och', 'or', 'l', 'y', 'n', and 'wh'. A diagonal line is drawn across the cube, labeled 'line of support'. **Cube 2:** This cube is shown in a standard isometric view, representing the cube after it has been rotated. The faces are labeled with the same abbreviations as Cube 1, but their arrangement is different, indicating the rotation. The asterisk marks the point of rotation. Below the cubes is a caption that reads: 'The cube swung round the red line, so that the white line points towards us.'