At first glance, it looks like nothing more than a bright pyramid of colorful triangles — a fun little puzzle floating across social media. Yet the longer you stare at the image, the more your mind starts to shift. Some people count 9 triangles. Others see 13, 16, or even more than 20. And somehow, each person feels convinced their number is right.
This simple optical illusion has captured millions of curious minds not because it’s a math challenge, but because it touches something deeper — the way we see, think, and interpret the world around us.