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Lesson Plans


Tri-fold directions

[ Thread ][ Subject ][ Author ][ Date ]
Sharon Heneborn (heneborn)
Fri, 26 Nov 1999 16:05:57 -0500


I received many quarries about the tri-folds. Here is how to make one
- best I can with words only:

Tri-fold: Start with a square. Fold opposite points (corners)
together, crease and unfold. Repeat with the other pair of points
(corners). There should be 2 diagonal folds crossing at the middle.
This will create 4 triangular shapes.

Cut from one point (corner) to stop at the center. Fold the 2
triangles adjoining the cut edges one over the other. This changes
the flat square into a 3-D pyramid with one triangle open. The double
(Congruent) triangle becomes the bottom of the triarama. After you
try to make one if you have trouble I will try again to explain. I
have never had to write the directions.

Sharon from NJ
--To respond to me directly click on heneborn

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  • Reply: Dennis Morris: "Re: Tri-fold directions"