한국수학교육학회지시리즈B:순수및응용수학 (The Pure and Applied Mathematics)

  • 제4권1호
  • /
  • Pages.1-6
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  • 1997
  • /
  • 1226-0657(pISSN)
  • /
  • 2287-6081(eISSN)
한국수학교육학회 (Korean Society of Mathematical Education)
권호 표지

THE LAW OF COSINES IN A TETRAHEDRON

  • 발행 : 1997.06.01
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초록

We will construct the generalized law of cosines in a tetrahedron, in a natural way, which gives three dimensional Pythagoras' theorem and enables us to calculate the volume of an arbitrary tetrahedron.

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