10 ft in the states and 30 ft apart
3 ft in Canada and 9ft apart. I'm not 100% sure about the Canada one :/
They can be any distance apart
It depends how far apart they are. It could be an infinite number.
Contours for a gentle slope are spaced equally and far apart, the closer the contour lines the steeper the slope.
If the slopes of two lines are unequal, they will cross somewhere, so the distance between them depends on x, and isn't really defined.If the slopes are equal, they are parallel, so they don't cross. So two lines are far apart if they have the same slope and a large difference in their x or y intercepts.
___ ___ MCM (It is MCM with two lines over it, not necessarily as far a apart as above.)
30 feet
One hundred miles apart
They are separated by 1,402 miles of highway.
a gentle slope
They go up and down latitude lines go sideways
100 yards from tryline to tryline.
The land is relatively flat.
They can be any distance apart
Contour lines that are far apart indicate a gentle slope. Because contour lines connect points with the same elevation, wide spacing indicates that the elevation is not changing drastically.
they have to be close together if they are far apart it means it is a flat area
They show a narrow area
It depends how far apart they are. It could be an infinite number.