What I want to share with you is: Have you mastered the summary of geographical knowledge, collection and backup? Provide ideas in daily learning and exam answering, hoping to be helpful to everyone.
When using directional calibration, the directional indicator always points north and cannot indicate other directions.
When determining the direction on a latitude and longitude map, it must be determined according to the rule of “longitude indicating the north-south direction and latitude indicating the east-west direction (taking the inferior arc)”. It is not possible to simply determine the direction based on the rule of “up north and down south, left west and right east”, but when both the longitude and latitude lines in the longitude and latitude network are straight lines, this rule can also be used to determine the direction.
3. When converting scales, special attention should be paid to the unity of distance units on the site and on the map.
When judging the flow direction of a river on a contour map, it is important to note that the bending direction of the contour line is opposite to the flow direction of the river.
