Surveying - Engineering

Q1:

The angle of intersection of a contour and a ridge line, is

A 30°

B 45°

C 60°

D 90°

ANS:D - 90°

The angle of intersection of a contour and a ridge line is generally close to 90°. This angle often occurs when the contour line crosses the ridge line almost perpendicular to each other. However, in some cases, especially in irregular terrain, the angle may vary slightly.