I have never seen the Pyraminx. I wonder if somebody could tell me
whether the picture I put together from the various comments made about
the Pyraminx is correct?
I am fairly certain that the Pyraminx is a regular tetrahedron. In the
solved state each of the four faces shows only one of the four colours.
I think the Pyraminx is cut along 8 planes, two planes perpendicular to
each of the four heights (i.e., the four lines that connect a corner with
the center of the opposite face). I think for the Pyraminx those planes
intersect the height at about 2/5 and 3/5 of the length of the height.
Those planes cut the Pyraminx into 15 pieces (1 central piece, 4 corners,
4 inner pieces, and 6 edes), which are all visible. Each face is cut
into 10 facelets by them as follows.
+ / \ / \ / \ / \ / \ +-----------+ / \ / \ / \ / \ +-----+-----+-----+ / \ \ / / \ / \ \ / / \ / \ + / \ / \ / \ / \ / \ / \ / \ +-----------+-----+-----------+
The Pyraminx Star was descibred as a Pyraminx without the centers.
So I guess each face of the Pyraminx Star looks as follows.
+ / \ / \ / \ / \ +---------+ / \ / \ / \ / \ / \ / \ / \ / \ +---------*---------+ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ / \ +---------+---------+---------+
The Pyraminx Snub was described as a Pyraminx without the tips.
So I guess each face of the Pyraminx Snub looks as follows.
+-----------+ / \ / \ / \ / \ +-----+-----+-----+ \ \ / / \ \ / / \ + / \ / \ / \ / \ / +-----+
I have no idea what Pyraminx Senior and the Pyraminx Master look like.
Have a nice day.
Martin.
-- .- .-. - .. -. .-.. --- ...- . ... .- -. -. .. -.- .- Martin Sch"onert, Martin.Schoenert@Math.RWTH-Aachen.DE, +49 241 804551 Lehrstuhl D f"ur Mathematik, Templergraben 64, RWTH, 52056 Aachen, Germany