Logic puzzles are often thought to be reserved for those with exceptionally high IQs… And yet! This small, seemingly simple triangle conceals a particularly ingenious challenge that stimulates the neurons of thousands of internet users. Think you have a sharp eye? Beware, this visual test might surprise you…
This triangle hides many others… but how many exactly?

Take a close look at the image. At first glance, it appears to be a large triangle made up of smaller segments. Easy? Not necessarily! Because the real question, the one that’s generating a lot of discussion on social media, is:
“How many triangles can we actually count in this figure?”
And believe us , it’s not as obvious as it seems.
Several answers are circulating: 22, 27, or 29. But be careful, only one is correct. And to find it, a quick glance isn’t enough. You have to observe carefully, analyze… and above all, not be fooled by optical illusions!
The trap of “hidden” triangles: our brain likes to simplify
It’s a well-known fact: our brain prefers to work quickly. It identifies shapes, infers outlines… and sometimes overlooks certain details. The result? We miss larger triangles, formed by the combination of several smaller ones. Sometimes two, sometimes four, or even nine!
So, to make sure you don’t forget anything, you need to count methodically:
- The small basic triangles (the most visible ones)
- Those formed by two small juxtaposed triangles
- Those resulting from four grouped triangles
- And of course, the largest ones, drawn by the complete lines… up to the final triangle that frames the whole figure.
The right calculation: how many are there really?
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