# Three Semi-Circles Around a Triangle _Posted on Apr 20, 2019_ +-- {.image} [[ThreeSemiCirclesAroundaTriangle.png:pic]] > What's the area of the red triangle? =-- * Thread [on twitter](https://twitter.com/Cshearer41/status/1119525265674309633) * [[three semi-circles around a triangle techniques]] * [[three semi-circles around a triangle solution]]