Number 2

Ascernaitable : the line of S, T, and U. the point of A and B as the picture of below. If T isometry with B = T(A) and U = T(S)

U = T(S) = S’

B = T (A)

A member S then B member S’

Because isometry T perpendicular of S and T’ perpendicular of S’ such that t’ at B and perpendicular of S’