In map plotting, which simple tool is used to plot straight-line distances?

In map plotting, which simple tool is used to plot straight-line distances?

• A. Calculator
• B. Ruler
• C. Protractor
• D. Compass

Answer: (B)

Plotting straight-line distances on a map relies on a straight edge to connect two points cleanly and translate map units to real-world distance. The ruler provides that straight edge and has measurement marks, so you can draw the line and read its length directly from the map’s scale. This makes the line both precise and easy to verify. A calculator helps with arithmetic or scale conversions but doesn’t supply a drawn line. A protractor is for angles, not straight lines. A compass can draw arcs or transfer distances, but for a simple straight-line plot, the ruler is the most straightforward and reliable tool.

Plotting straight-line distances on a map relies on a straight edge to connect two points cleanly and translate map units to real-world distance. The ruler provides that straight edge and has measurement marks, so you can draw the line and read its length directly from the map’s scale. This makes the line both precise and easy to verify. A calculator helps with arithmetic or scale conversions but doesn’t supply a drawn line. A protractor is for angles, not straight lines. A compass can draw arcs or transfer distances, but for a simple straight-line plot, the ruler is the most straightforward and reliable tool.