MathDB
2013 SMT Geometry #4

Source:

November 2, 2014
geometry3D geometrytetrahedronsymmetryrhombus

Problem Statement

ABCDABCD is a regular tetrahedron with side length 11. Find the area of the cross section of ABCDABCD cut by the plane that passes through the midpoints of ABAB, ACAC, and CDCD.
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