A one-point perspective drawing means that the drawing has a single vanishing point, usually (though not necessarily) directly opposite the viewer's eye and usually (though not necessarily) on the horizon line. All lines parallel with the viewer's line of sight recede to the horizon towards this vanishing point.
One Point Perspective is a type of linear perspective that uses a single vanishing point to create the illusion of depth in a work of art.
Parallel – Parallel lines are lines that never touch… even if they are extended indefinitely.
Horizontal Lines – Lines drawn from side to side level with the horizon.