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Theorems on the Tetrahedron
Published online by Cambridge University Press: 03 November 2016
Extract
Through any point 0 in space a straight line POP1 can be drawn meeting the opposite edges AD, BC of a tetrahedron ABCD in the points P, P 1 respectively; another straight line QOQ1 can be drawn to meet DB, AC in Q, QI; and another straight line ROR1 to meet DC, AB in R, RI.
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- Copyright © Mathematical Association 1935
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