The horizon line is where the earth meets the sky. In a photograph, the horizon line should be horizontal (flat) or the picture will looked tilted.
somethin dat has three lettaz but atill idk i wouldn't trust ny answeres.lol /
arc
It is where the sky seems to meet the land or sea when you look in a particular direction, particularly where the land is flat and there is no physical obstructions, like buildings, or where you have...
i really dont kno the horizon line
Not sure about the horizon number line but the horizontal line is sometimes called the x-axis.