How many triangles?
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Shouldn't it be 25?
The whole big triangle is another one.
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Shouldn't it be 25?
The whole big triangle is another one.
@taiwan_girl said in How many triangles?:
Shouldn't it be 25?
The whole big triangle is another one.
See my last picture. There are 4 blue triangles, one of them is the entire picture.
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D'oh!!!!! You are correct. :smack head
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This generates 12 triangles.

This generates 8 more for a total of 20.

Here's the final 4.

I'm sure there's a mathematical explanation, but I don't speak that language.
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