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# 13, no 14

Logical Reasoning
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From the above diagram, we see that in order to create 1, 2, 3 and 4 unit equilateral triangles on a flat plane, we need 3, 5, 7 and 9 matchsticks respectively.

What is the minimum number of matchsticks on a flat plane needed to create 7 unit equilateral triangles?

No one said that a triangle created by triangles didn't count... i want my point

i see 8 triangles...

Note by J Alejandro Sanchez Valencia
1 year, 3 months ago

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