(Solved): On a contour map, most lines are not labeled to avoid making the map difficult to read. Instead, eve ...

On a contour map, most lines are not labeled to avoid making the map difficult to read. Instead, every \( 5^{\text {th }} \) line is labeled and has a heavier and thicker line. These lines are called index contour lines. major contour lines. identifying contour lines. important lines.