You may also like

problem icon

Colouring Triangles

Explore ways of colouring this set of triangles. Can you make symmetrical patterns?

problem icon

Chain of Changes

Arrange the shapes in a line so that you change either colour or shape in the next piece along. Can you find several ways to start with a blue triangle and end with a red circle?

problem icon

Cut it Out

Can you dissect an equilateral triangle into 6 smaller ones? What number of smaller equilateral triangles is it NOT possible to dissect a larger equilateral triangle into?

Triangle Shapes

Stage: 1 and 2 Challenge Level: Challenge Level:1
Here are two triangles. We're going to see what shapes we can get by using many of them.
You might like to print off this sheet of triangles to cut out and use, or you could use this interactive board to make shapes:

Full Screen Version

If you can see this message Flash may not be working in your browser
Please see to enable it.

You might try putting them together like this:

Try making that or something similar.

Sometimes you can make "jewel-like" shapes:
See what "jewels" you can make.

You might make the triangles from different materials, or use an overhead projector transparency so that they are a bit transparent, then you can overlap them:
When you do that, you might try to see what shapes you've made at the overlap.

Maybe you could experiment further with this idea and create pictures like these:

Please do send in pictures of the shapes you make, whether they include overlaps or not.
Tell us what you notice about the shapes you've made.