EntityQ306542· pop 15· linked from 21 articlestransformation geometrySign in to savestudy of geometry focusing on groups of geometric transformationsConnectionscongruenceEntityreflectionEntityRussiaCountrymathematicsEntitygeometryEntityInternational Standard Book NumberEntitycomplex numberEntityset theoryEntitypedagogyEntitylinear algebraEntitymatrixEntitytheoremEntitygroupEntityEuclidean geometryEntitygroup theoryEntityanalytic geometryEntityrotationEntityAndrey KolmogorovEntitycommutative propertyEntityFelix KleinEntityCategoriesFields of geometryGeometry educationSymmetry