The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 21 inches and a second side that is 3 inches less than twice the third side, what are the possible lengths for the second and third sides?

Type the correct answer in each box. spell all words correctly. a sequence of transformations maps ∆abc onto ∆a″b″c″. the type of transformation that maps ∆abc onto ∆a′b′c′ is a . when ∆a′b′c′ is reflected across the line x = -2 to form ∆a″b″c″, vertex of ∆a″b″c″ will have the same coordinates as b′.