What are some types of line, and what are their purposes? (site 1) X G GG
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vertical, horizontal, diagonal, curved, and zigzag.

Explanation:

vertical lines

move straight up and down - they do not lean at all.

Horizontal lines

parallel to the horizon. They do not slant

Diagonal lines

slant. They are somewhere between a vertical and a horizontal line. Diagonals look as if they are either rising or falling.

Zigzag lines

made from a combination of diagonal lines. The diagonals form angles and change direction suddenly.

Curved lines

change direction gradually. When you draw wiggly lines, you are putting together a series of curves. Other kinds of curved lines form spirals and circles.