In geometry, the pentagonal cupola is one of the Johnson solids (J5). It can be obtained as a slice of the rhombicosidodecahedron.
The 92 Johnson solids were named and described by Norman Johnson in 1966.
The pentagonal cupola consists of 5 equilateral triangles, 5 squares, 1 pentagon, and 1 decagon.
Read more about Pentagonal Cupola: Formulae