The landscape and sky around the family in Lange's Homeless Family are an example of
color
form
line
space

There are different types of visual element. The landscape and sky around the family in Lange's Homeless Family are an example of space.
Space is said to be either positive or negative. It consist of all the background, foreground, and middle ground.
Positive space is known to show all the contents of a shape or form, and is restricted by edges or surfaces.
Negative space is one that shows the "empty" area surrounding a shape or form.
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