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## 'Shear Magic' printed from http://nrich.maths.org/

All these triangles have a base of 1 unit and a height of 2 units. We
could call them a "family" of triangles.

What are their areas? What do you notice?

Can you generalise to other "families" of triangles?

You may like to use the interactivity below to investigate more
triangles

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