Let's take a walk down memory lane - straight to geometry class (sorry). A Twitter user posted a photo of a mind-boggling triangle brain teaser, and people are now questioning their basic math skills.

Author Ed Southall of Solve My Maths shared a math problem on Twitter asking people to figure out what fraction of a square is shaded pink. Twitter users struggled to figure it out, but some got it ...

Let's take a walk down memory lane - straight to geometry class (sorry). A Twitter user posted a photo of a mind-boggling triangle brain teaser, and people are now ...

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