Can you devise a fair scoring system when dice land edge-up or
corner-up? Can all but one square of an 8 by 8 Chessboard be
covered by Given that ABCD is a square, M is the mid point of AD
and CP is perpendicular to MB with P on MB, prove DP = DC. I
noticed this about streamers that have rotation symmetry : if
there was one centre of rotation there always seems to be a
second centre that also worked. Can you find a design that has
only. . . . Points off a rolling wheel make traces. What makes
those traces Sketch the members of the family of graphs given by
y = a^3/(x^2+a^2) for a=1, 2 and 3. An article for students and
teachers on symmetry and square dancing. What do the symmetries
of the square have to do with a dos-e-dos or a swing? Find out
more? What groups of transformations map a regular pentagon to
itself? Investigations and activities for you to enjoy on
pattern in Proofs that there are only seven frieze patterns
involve complicated group theory. The symmetries of a cylinder
provide an easier approach