Final answer:
The term for the element in art that is a mark between two endpoints is line.
Step-by-step explanation:
The term for the element in art that is a mark (or implied mark) between two endpoints is line. A line can be straight, curved, thick, thin, or even implied. For example, in a painting, the lines created by brushstrokes or the contour lines of a sculpture all represent the element of line in art.
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