Copyright © University of Cambridge. All rights reserved.

'Nine-pin Triangles' printed from http://nrich.maths.org/

Show menu


How will you record the triangles you've made? You might like to print off this sheet to use.
You could try drawing triangles which have a side made by joining two pegs next to each other. How many different triangles can you make in this way?
How will you know when you've got them all?