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Colouring Triangles

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

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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?

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Complete the Square

Complete the squares - but be warned some are trickier than they look!


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.

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