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National Flags

Age 7 to 11
Challenge Level Yellow star
Primary curriculum
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National Flags poster

During an Olympic Games many national flags are on display.

Here's a chance to investigate some of them.

Pick a flag and investigate some of the following:

What shapes can you see in it? Can you describe them and their angles?

Does the flag have any lines of reflective symmetry, if so how many lines?

Can you find any pairs of parallel lines? If so mark them on your flag.

Are there any lines perpendicular to one another?

Can you find a way to classify the shapes in your flag?

Now try with another flag.

This problem was developed for us by Claire Willis.
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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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