60

Part of 1949-56 Chisinau City MO

Problems(1)

Chisinau MO p60 1949-56 X sum of the distances, regular tetrahedron

Source:

Show that the sum of the distances from any point of a regular tetrahedron to its faces is equal to the height of this tetrahedron.

geometrydistanceregular tetrahedrontetrahedron3D geometry