536 Puzzles and Curious Problems

(Elliott) #1
336 Answers


  1. SQUARE AND TRIANGLE


•••••... H

Fold the square in half and make
the crease FE. Fold the side AB so
that the point B lies on FE, and you
will get the points G and H from
which you can fold HGJ. While B is
on G, fold AB back on AH, and you
will have the line AK. You can now
fold the triangle AJK, which is the
largest possible equilateral triangle
obtainable. ·~~----~----~R



  1. STRIP TO PENTAGON


By folding A over, find C, so that BC equals AB. Then fold as in Figure I,
across the point A, and this will give you the point D. Now fold as in Figure 2,
making the edge of the ribbon lie along AB, and you will have the point E.


8 C


Continue the fold as in Figure 3, and so on, until all the ribbon lies on the
pentagon. This, as we have said, is simple, but it is interesting and instructive.

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