Using a coordinate method to measure the point of impact, how many measurements do you need to show one point?

To accurately determine a point of impact using a coordinate method, two measurements are essential. This approach typically involves establishing a grid or a reference system where one can define a specific location based on two perpendicular lines, such as the x and y axes. By measuring the distance from the point of impact to both of these reference lines, you can pinpoint the exact location on the grid.

Using just one measurement would not be sufficient, as it would only give you a distance along one axis, leaving an ambiguity in the location vertically or horizontally. Therefore, obtaining two measurements allows for a complete and precise identification of the point's coordinates within the defined space. This practice is crucial in fields like accident reconstruction or crime scene investigation, where understanding the exact position of evidence is vital for further analysis and reporting.