What term refers to lines that run straight up and down?

• A. Vertical Lines
• B. Horizontal Lines
• C. Diagonal Lines
• D. Curved Lines

Answer: (A)

Vertical lines are lines that run straight up and down from bottom to top. They’re oriented upright and are perpendicular to horizontal lines, which run left to right. In art and design, vertical lines can suggest height, strength, and structure, guiding the eye upward and creating a sense of stability in a composition. The other types describe different directions: horizontal lines stretch side to side, diagonal lines tilt rather than stand upright, and curved lines bend rather than stay straight.