In determining a two-point intersection, what is needed after marking your known position?

To determine a two-point intersection after marking your known position, converting to grid and plotting is essential. This process allows you to accurately translate your known coordinates onto a grid system, facilitating the identification of where the lines of the two points intersect. By utilizing a grid, you can visually see the relationship between the points and your current position, ensuring that the intersection is found with precision. This method also aids in navigating and aligning the plotted points along with other relevant geographical information.

The other options may offer supportive information or alternative methods but do not directly address the specific next step required for a two-point intersection. Using a map legend can help understand distances or scales but is not integral to the process of determining an intersection. Drawing lines to the edge of the map might help in visualization but does not contribute directly to finding the intersection itself. Utilizing a GPS device can provide location data, but in the context of two-point intersection analysis, plotting on a grid is the definitive action needed following the initial marking.