Difference between revisions of "1975 USAMO Problems/Problem 2"
(New page: ==Problem== Let <math>A,B,C,D</math> denote four points in space and <math>AB</math> the distance between <math>A</math> and <math>B</math>, and so on. Show that <center><math>AC^2+BD^2+AD...) |
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Revision as of 17:11, 30 December 2008
Problem
Let 
denote four points in space and 
the distance between 
and 
, and so on. Show that
.Solution
This problem needs a solution. If you have a solution for it, please help us out by adding it.
See also
| 1975 USAMO (Problems • Resources) | ||
| Preceded by Problem 1 |
Followed by Problem 3 | |
| 1 • 2 • 3 • 4 • 5 | ||
| All USAMO Problems and Solutions | ||
