Lines used to represent topography, displaying changes in elevation across the ground are know as __________ lines. They connect poisitions having the same elevation.

• A. Contour
• B. Isoline
• C. Elevation
• D. Trendline

Answer: (A)

Contour lines are used to represent the terrain by joining points that have the same elevation, showing how elevation changes across the ground. They form a map of topography, with tightly spaced lines indicating steep slopes and widely spaced lines indicating gentle slopes. While an isoline is a general term for any line that connects equal values (like isotherms for temperature), the specific term for elevation on a topo map is contour lines. Elevation is a value, not a line, and a trendline is a statistical line used to show a trend in data, not to depict ground relief.