1973 USAMO Problems/Problem 1
Problem
Two points and
lie in the interior of a regular tetrahedron
. Prove that angle
.
Solution
See also
1973 USAMO (Problems • Resources) | ||
Preceded by First Question |
Followed by Problem 2 | |
1 • 2 • 3 • 4 • 5 | ||
All USAMO Problems and Solutions |