7.8 x 19.5 x 19.5 cm. (3.1 x 7.7 x 7.7 in.) ...
Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results