# Circle In Pentagon in Semi-Circle _Posted on Aug 11, 2019_ +-- {.image} [[CircleInPentagoninSemiCircle.png:pic]] > A circle in a regular pentagon in a semicircle. What fraction of the semicircle is shaded? =-- * Thread [on twitter](https://twitter.com/Cshearer41/status/1160442705157197824) * [[circle in pentagon in semi-circle techniques]] * [[circle in pentagon in semi-circle solution]]