alleryStart learning →In surveying, contour lines connect points of:
ASame elevation (height above mean sea level)
BSame vegetation
CSame wind
DSame temperature
Answer & Solution
Correct answer: A. Same elevation (height above mean sea level)
**Contours:** equal-elevation lines on topographic map.
**Spacing:** contour interval (typically 1, 2, 5, 10 m).
Closely-spaced contours = steep slope.
Widely-spaced = gentle slope.
Closed loops with high points inside = hill
with low inside = depression.
Critical for site planning, drainage, route alignment.
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