Brain Teasers
On a Plane
Whenever I move, I change planes. How can this be since I never fly?
Hint
GeometryAnswer
This ellipsoid called Earth is made up of an infinite number of geometric planes, as is any sphere. We can only be perpendicular to one plane at a time, so whenever we move it is always a movement between different planes, in a geometric sense. Thus whenever we move we change planes.Hide Hint Show Hint Hide Answer Show Answer
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Solve a Puzzle
Comments
nice puzzle,luv it
very good like alot
If you walked in a straight line on the Earth's surface you would remain in the plane of a great circle of which your journey would constitute an arc.
May 27, 2003
Really hard but concept is dumb
I got the point of what the rteaser was trying to do, but it's flawed.
There are an infinite number of planes in common between any two points, or any line segment, so moving between two points keeps you in an infinite number of planes. On the other hand, there are an infinite number of planes that contain only one of the two points, so any movement causes you to change between an infiinite number of planes.
The elipitical shape of the Earth is irrelevant, as these conditions apply to someone walking across the surface of a plane, or between any two points anywhere.
There are an infinite number of planes in common between any two points, or any line segment, so moving between two points keeps you in an infinite number of planes. On the other hand, there are an infinite number of planes that contain only one of the two points, so any movement causes you to change between an infiinite number of planes.
The elipitical shape of the Earth is irrelevant, as these conditions apply to someone walking across the surface of a plane, or between any two points anywhere.
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