regular polygonregular polyhedral groupregular polyhedronregular presentationregular regionregular representationregular septagonregular sequenceregular setregular sets substitutionregular singularregular singular pointregular singularityregular solidregular solidsregular spaceregular tetrahedronregular transformationregular valueregularityregularizationregularizeregularlyregulateregulated planeregulationregulatorreheatingreimman stieltjes integralrejectreject gaterejectable quality levelrejecting staterejectionrejection numberrejection of hypothesisrejection raterejection regionrelabelrelabelingrelaterelatedrelated anglerelated angle of an anglerelated raterelated ratesrelated variablesrelationrelation companionrelation group