

problem
Fractional triangles
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.

problem
Nine-pin triangles
How many different triangles can you make on a circular pegboard that has nine pegs?

problem
Cut nets
Each of the nets of nine solid shapes has been cut into two pieces. Can you see which pieces go together?

problem
Eight hidden squares
On the graph there are 28 marked points. These points all mark the vertices (corners) of eight hidden squares. Can you find the eight hidden squares?

problem
Ten hidden squares
These points all mark the vertices (corners) of ten hidden squares. Can you find the 10 hidden squares?