Take a unit square of paper ABCD. Label the midpoints of BC and CD by E and F. Fold up along AE, EF, and AF so that B, C, and D come together and a tetrahedral pyramid is formed.
Find the height to the base AEF.
https://www.desmos.com/calculator/mh2ibfjuth
(In reply to
solution by Charlie)
I used plane trig at first as well. But then I took my physical model and turned it sideways.
You might try to find the solution by this easy method before looking at the posted solution.
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Posted by Jer
on 2021-08-07 11:30:27 |
re: solution
