Penta people, the Pentominoes, always build their houses from
five square rooms. I wonder how many different Penta homes you
can Can you make these equilateral triangles fit together to
cover the paper without any gaps between them? Can you
tessellate isosceles A tetromino is made up of four squares
joined edge to edge. Can this tetromino, together with 15 copies
of itself, be used to cover an eight by eight chessboard? Below
is a pattern which can be created using a pair of compasses and
a ruler, and a photograph of an Islamic Star. Use the
interactivity to make this Islamic star and cross Can you
produce the following tessellations: regular octagons with two
different types of triangle? irregular hexagons with triangles
and squares? Click on a region of the pattern to change its
colour. The colours will cycle between white, green, purple and
orange if you Use the CLEAR button to change everything back to
white. version of the above interactivity