Speaking of polygonical manholes, does anyone know where to get a copy of
turtle logo for older macs? Or, perhaps even better, a cartridge version
for one of the 6502 machines (Atari, c64, etc.)? (This is for my niece who
is probably about ready to at least watch logo pgms.)
At 01:06 PM 1/29/98 GMT, you wrote:
>indeed round because they then won't fall down the hole if you drop
>them. But other shapes share this property - triangular manholes are
You may have triangular manholes (and, I assume, covers), but I disagree
with the statement that they won't fall in. (Mind you, they may not be
*likely* to, but that doesn't mean they won't.)
Consider any regular (is that the right term?) polygon (i.e., all sides,
angles are equal).
For an odd number of sides: imagine a line from an angle to the midpoint of
the opposite side. Imagine a second line, from that same angle to either
end of the opposite side. You've just created a right triangle (imaginary
lines, half the opposite side) wherein the first imaginary line *must* be
shorter than your second line. Put your first line parallel to the ground,
line up the manhole vertically above the corresponding second line on the
manhole, and drop.
For an even number of sides: Do the same thing, only the reverse (opposite
angle and connected side, etc.)
Oh, make sure there's no one down below before dropping *please*
--------------------------------------------------------------------- O-
Uncle Roger "There is pleasure pure in being mad
roger_at_sinasohn.com that none but madmen know."
Roger Louis Sinasohn & Associates
San Francisco, California
http://www.crl.com/~sinasohn/
Received on Thu Jan 29 1998 - 22:01:42 GMT