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If F · B. of Line AB is 100° and F · B. of line BC is 200°, What is ∠ABC?
80°
100°
90°
110°
80°
Practice and solve "If F · B. of Line AB is 100° and F · B. of line BC is 200°, What is ∠ABC?..." for Civil - Surveying · The correct answer is Option A: 80°. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Option **(a) **