identical

exactly alike; incapable of being perceived as different; "rows of identical houses"; "cars identical except for their license plates"; "they wore indistinguishable hats"

being the exact same one; not any other:; "this is the identical room we stayed in before"; "the themes of his stories are one and the same"; "saw the selfsame quotation in two newspapers"; "on this very spot"; "the very thing he said yesterday"; "the very man I want to see"

(of twins) derived from a single egg or ovum; "identical twins are monovular"

having properties with uniform values along all axes

coinciding exactly when superimposed; "identical triangles"