Chritsmas Tree Maths

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The elves love their mathy tree! But they are a bit confused.

How many triangles can you see in this triangle-based Christmas tree?

Download a paper version at the bottom of the page.

13

9 little triangles, 3 medium triangles and 1 big triangle (the tree itself!)

To Print

What’s the Maths behind?

What’s behind? Maths tips

The participants developed their perception of shapes, their counting skills and problem-solving skills.