Matching Triangles

Stage: 1 Challenge Level: Challenge Level:1
Try concentrating on one triangle at a time. Perhaps you can imagine moving it around in your head so that it is a different way up?
You could print off this sheet of the triangles, then cut them out to sort them.  (The first page is in colour, the second in black and white.)
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. More information on many of our other activities can be found here.
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NRICH is part of the family of activities in the Millennium Mathematics Project.