Difference between revisions of "1989 AIME Problems/Problem 12"
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== Problem == | == Problem == | ||
+ | Let <math>ABCD^{}_{}</math> be a tetrahedron with <math>AB=41^{}_{}</math>, <math>AC=7^{}_{}</math>, <math>AD=18^{}_{}</math>, <math>BC=36^{}_{}</math>, <math>BD=27^{}_{}</math>, and <math>CD=13^{}_{}</math>, as shown in the figure. Let <math>d^{}_{}</math> be the distance between the midpoints of edges <math>AB^{}_{}</math> and <math>CD^{}_{}</math>. Find <math>d^{2}_{}</math>. | ||
+ | |||
+ | [[Image:AIME_1989_Problem_12.png]] | ||
== Solution == | == Solution == | ||
+ | {{solution}} | ||
== See also == | == See also == | ||
+ | * [[1989 AIME Problems/Problem 13|Next Problem]] | ||
+ | * [[1989 AIME Problems/Problem 11|Previous Problem]] | ||
* [[1989 AIME Problems]] | * [[1989 AIME Problems]] |
Revision as of 23:18, 24 February 2007
Problem
Let be a tetrahedron with
,
,
,
,
, and
, as shown in the figure. Let
be the distance between the midpoints of edges
and
. Find
.
Solution
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