( ( A ( flat ( or ( plane mirror ) ) ) ) ( ( ( ( give ( ( a ( virtual image ) ) ( of ( ( the ( same size ) ) ( as ( the object ) ) ) ) ) ) but ) ( ( is laterally ) ( inverted ( -LRB- ( ( left ( ( is ( ( right and ) right ) ) ( is left ) ) ) -RRB- ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ flat) (CC or) (NN plane) (NN mirror)) (VP (VP (VBP give) (NP (NP (DT a) (JJ virtual) (NN image)) (PP (IN of) (NP (NP (DT the) (JJ same) (NN size)) (PP (IN as) (NP (DT the) (NN object))))))) (CC but) (VP (VBZ is) (ADVP (RB laterally)) (VP (VBN inverted) (PRN (-LRB- -LRB-) (S (NP (NN left)) (VP (VBZ is) (ADVP (RB right) (CC and) (RB right)) (VP (VBZ is) (VP (VBN left))))) (-RRB- -RRB-))))) (. .)))
A flat or plane mirror give a virtual image of the same size as the object but is laterally inverted (left is right and right is left).
(ROOT (S (NP (DT A) (NN plane) (NN mirror)) (VP (VP (VBZ has) (NP (DT a) (ADJP (JJ flat) (JJ reflective)) (NN surface))) (CC and) (VP (VBZ forms) (NP (RB only) (JJ virtual) (NNS images)))) (. .)))