Triangles

problem

Part the Polygons

Age

7 to 11

Challenge level

Draw three straight lines to separate these shapes into four groups - each group must contain one of each shape.
problem

Tri-Five

Age

7 to 11

Challenge level

Find all the different shapes that can be made by joining five equilateral triangles edge to edge.
problem

Putting Two and Two Together

Age

7 to 11

Challenge level

In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?
problem

Triangle Relations

Age

7 to 11

Challenge level

What do these two triangles have in common? How are they related?
problem

Three Triangles

Age

7 to 11

Challenge level

What do you notice when you put three triangles together?
problem

Possible Pairs

Age

7 to 11

Challenge level

In this game, you turn over two cards and try to draw a triangle which has both properties.
problem

Triangle in a Square

Age

7 to 11

Challenge level

Do you agree with Badger's statements? Is Badger's reasoning watertight? Why or why not?
problem

Regular Rings 1

Age

7 to 11

Challenge level

Can you work out what shape is made by folding in this way? Why not create some patterns using this shape but in different sizes?
problem

Folding

Age

7 to 11

Challenge level

What shapes can you make by folding an A4 piece of paper?
problem

Diagrams

Age

7 to 11

Challenge level

A group activity using visualisation of squares and triangles.