Reassembling triangular puzzle
pieces, induces always to paradoxical conclusions. The squares
of the fig. 2.c) and 2.d) have extra triangular elements. Is
then their area larger than the one in the fig. 2.a)? As before,
we have to consider the angles of each right triangle which
form these squares. By doing that, we will easily notice that
the hypotenuse slopes of the small and of the large right triangles
are slightly different (a difference of approx. 0.8 degrees,
visually unnoticeable). So, the 8 right triangles do not form
exactly a square and the sum of all these tiny fitting errors
(grey zones in the fig. 5) is equal to the area of the protruding
triangular elements. In short, space apparition is only illusion!
missing square puzzle
(called 'Fehlendes-Quadrat-Puzzle', in German;
and 'wigparadox', in Dutch)
We can even enhance the 'vanishing
area paradox' effect by adding 4 squares of
6 units per side to the Circea's puzzle. When you rearrange the
puzzle pieces a square space appears or disappears (see examples
squares are formed with exactly the same 12 pieces.
The second one, however, needs an extra piece!
classrooms and amateur magicians
Our puzzles Quadrix and Geometrex are
based on the above vanishing area principle:
when several pieces of the puzzles are permuted, a small
square hole magically appears...
You can purchase these hands-on games, useful for classroom
demonstrations or for magic close-up shows, online.
lot of well known magic tricks, such as the Winston
Freer Tile Puzzle or the Paul Curry's
Geometrical Paradox, are inspired by these basic
manufacturers or publishers
We are presently actively looking for manufacturers or
publishers interested to produce and market the vanish Quadrix magic
vanish puzzle under licence for specific countries on exclusive
or non-exclusive basis. Please contact
us if interested for details.