From point O, a sailor moves 10 m North, 10 m West, 10 m South, and 10 m East. Where does he stand?
Q1. From point O, a sailor moves 10 m North, 10 m West, 10 m South, and 10 m East. Where does he stand?
Answer: At point O
Explanation: The four legs form a closed rectangle. He returns to the same starting point O.