You may also like

problem icon

Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

problem icon

Seven Sticks

Explore the triangles that can be made with seven sticks of the same length.

problem icon

Three Fingers and a Loop of String

Using a loop of string stretched around three of your fingers, what different triangles can you make? Draw them and sort them into groups.


Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

If I have these two shapes:

yellow square, red equilateral triangle

and I overlap them a bit, I get this:

overlapped so that triangle is half covered by square

The overlapped part looks like this:

orange right angled triangle shape of overlap

Can you match these pairs of shapes with the shape you would get if you overlapped them?

pairs of shapes to match with shapes of overlap

You may like to use this interactivity to test your ideas after you have tried imagining the overlap in your head.

Full screen version
This text is usually replaced by the Flash movie.