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Yes, any vertex is formed by two adjacent lines.
the two adjacent angles formed by the intersecting lines will equal 180 degrees.
Not aways because they can be perpendicular lines or lines of intersection
According to the sample exam for CQI (Certified Quality Inspector) the answer is discrimination.
No. Consider a set of two or more parallel lines and pick any one of them. There will be another line adjacent to it. But, because it is parallel to the first, they cannot intersect.
Elevation
The elevation difference between two adjacent lines.
Contour numbers.
the elevation difference between two adjacent contour lines.
the elevation difference between two adjacent contour lines.
Color
contour lines
Contour interval
Contour interval
Contour interval.
Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.
Those lines representing elevation on a map are called contour lines. The difference in elevation between two of these lines is called the contour interval. Different maps use different contour intervals based on the scale of the map, or in other words, the size of the contour interval is based on how zoomed in and detailed the map is. Sometimes a map will have darker and thicker contour intervals. This is called the Index Contour Interval. Index contour intervals appear less frequently and represent a larger elevation change. It helps you figure out the amount of a large elevation difference faster because usually they are multiples of 100 or 1000, making them easier to add up.