The line and the point define a plane.
One direction
Substitute the coordinates of the point into the equation of the line. If the result is true, then the point is on the line.
True
True.
True
True
true
Substitute the coordinates of the point into the equation of the line. If the result is true, then the point is on the line.
True
True.
No. Every point on a contour line has the same elevation.
True.
True
True.
true
true
True
True meridian through a point is the line in which a plane, passing that point and the north and south poles, intersects with surface of the earth. It thus, passes through the true north and south. the direction of true meridian through a point can be established by astronomical observations.