Equilateral Pentagon: Geometry, Polygon, Regular Pentagon, Isosceles

Snub Dodecahedron: Regular Polygon, Geometry, Pentagon

Equiangular Polygon: Euclidean Geometry, Polygon, Regular Equilateral Triangle

Cupola (geometry): Geometry, Polygon, Equilateral Triangle

Equilateral Polygon: Geometry, Polygon, Triangle, Internal Angle