Which of the following is true about zigzag lines? a. zigzag lines make sharp turns back and forth. b. zigzag lines have no bends in them. c. zigzag lines can only be vertical lines. d. zigzag lines do not change direction.

A. Zigzag lines make sharp turns back and forth.

Explanation:

Zigzag is the name of a line that makes many short, sharp turns. This creates an angular shape that is characterized by sharp turns that alternate directions.  The first turn of a line is called "zig," while the second turn is called "zag." Examples of zigzag lines are the letter "Z" or the symbol of a thunderbolt.

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