Question

the longitude circle determines the geographic north-south direction, the
line of longitude towards the north pole being the direction
North true north. The vertical plane containing the longitude circle
Consider a point on the earth's surface. At such a point, the direction of

can any one explain this ​ please urgentt

Answer 1

Answer:

Consider a point on the earths surface. At such a point, the direction of the longitude circle determines the geographic north-south direction, the line of longitude towards the north pole being the direction of true north. The vertical plane containing the longitude circle and the axis of rotation of the earth is called the geographic meridian. In a similar way, one can define magnetic meridian of a place as the vertical plane which passes through the imaginary line joining the magnetic north and the south poles.This plane would intersect the surface of the earth in a longitude like circle.