Extracted text: TRUE OR FALSE 1. The DMD method uses coordinates of the lot corners to determine the area. 2. The GPS technology can be used for security purposes. 3. Small scale maps covering the whole Philippines are very accurate. 4. The Coordinate Squares method of determining land area is used when the coordinates of the lot corners are known. 5. Only the United States of America and Russia own a global navigational satellite system. 6. In differential leveling, a backsight reading is taken on the last point whose elevation is to be established. 7. The elevation provided by GPS is very accurate. 8. Topographic map symbols used in the Philippines are the same symbols used in Indonesia. 9. In barometric leveling, the measured atmospheric pressure is directly proportional to the elevation of the point. 10. Area determination is one of the primary objectives of land surveys.