What are orthogonal lines?
a. any lines on the floor of a painting
b. imaginary lines that lead to the vanishing point
c. lines that artists use to create a symmetrical piece
d. none of the above

Orthogonal lines are imaginary lines that lead to the vanishing point . Correct B

The term orthogonal is derived from mathematics. It denotes 'at right angles' Orthogonal run parallel to each other and give you a sense of perspective and never intersept. In art orthogonal lines are used to keep the objects in line with the picture's vanishing point..

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