Triangles

problem

Cutting It Out

Age

5 to 11

Challenge level

I cut this square into two different shapes. What can you say about the relationship between them?
problem

Folding Flowers 2

Age

7 to 11

Challenge level

Make a flower design using the same shape made out of different sizes of paper.
problem

Tri.'s

Age

7 to 11

Challenge level

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

Cutting Corners

Age

7 to 11

Challenge level

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

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

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

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?