# Semi-Circle in a Right-Angled Triangle _Posted on Jul 23, 2019_ +-- {.image} [[SemiCircleinaRightAngledTriangle.png:pic]] > A semi-circle sits in a right-angled triangle. What's the shaded area? =-- * Thread [on twitter](https://twitter.com/Cshearer41/status/1153604774484484098) * [[semi-circle in a right-angled triangle techniques]] * [[semi-circle in a right-angled triangle solution]]