Tahlia M.

asked • 09/09/14

What is the angle between any two faces on a tetrahedron?

A tetrahedron has edges of 5cm each. What is the angle between any two faces? 
Please explain how to answer this question. Thanks :)

2 Answers By Expert Tutors


Ira S. answered • 09/09/14

5.0 (298)

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Phillip R.

yes, I checked a reference and the face-edge-face angle is arcos(1/3) = 70.53 degrees


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