This is a classic puzzle.
A person starts at his hut, travels 2km south, then 2km east,
then 2km north and is then back at his hut. .Where is his hut?
The expected answer is that the hut is at the North Pole.
However, the hut could also be in the southern hemisphere.
Which diagram represents possible sets of points near the South Pole?
(The correct answer has three circles in a square) . I don't understand
There is a point near the South Pole.
He walk 2 km south to point
When he walks 2 km east, he walks around the earth and returns to
. . (The circumference of the circle of latitude is exactly 2 km.)
Then he walks 2 km north and arrives at
Actually point can be any point on its circle of latitude.
. . Hence, there are brizillians of possible starting points.
We can also locate point so that he walks 2 km south to point
Then when he walks 2 km east, he walks around the earth twice.