Triangles

problem

Tri.'s

Age

7 to 11

Challenge level

1 out of 3

How many triangles can you make on the 3 by 3 pegboard?
problem

Cutting Corners

Age

7 to 11

Challenge level

1 out of 3

Can you make the most extraordinary, the most amazing, the most unusual patterns/designs from these triangles which are made in a special way?
problem

Tessellating Triangles

Age

7 to 11

Challenge level

1 out of 3

Can you make these equilateral triangles fit together to cover the paper without any gaps between them? Can you tessellate isosceles triangles?
problem

Cut and Make

Age

7 to 11

Challenge level

1 out of 3

Cut a square of paper into three pieces as shown. Now,can you use the 3 pieces to make a large triangle, a parallelogram and the square again?
problem

Part the Polygons

Age

7 to 11

Challenge level

1 out of 3

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

1 out of 3

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

1 out of 3

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

1 out of 3

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

Three Triangles

Age

7 to 11

Challenge level

1 out of 3

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

Possible Pairs

Age

7 to 11

Challenge level

1 out of 3

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