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Four Triangles Puzzle

Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?

Two by One

An activity making various patterns with 2 x 1 rectangular tiles.

Shapely Tiling

Use the interactivity to make this Islamic star and cross design. Can you produce a tessellation of regular octagons with two different types of triangle?

Overlapping Circles

Age 7 to 11 Challenge Level:

Can you describe the sides of the shapes you can make?

Do you notice anything about all the shapes you make using two circles the same size?

When the two circles are different sizes, what else is possible?