Two objects having both the same size and shaped could be said to be 'congruent'.
It is said to be 'similar'
Having the same size and shape means that you look the same height and size.
it is similar, easy as that. congruent is same shape same size ans similar is same shape different size similar=two figures that have the same shape, but not necessarily the same size
The definition of equivalent is something that is ... having the same valence; Geom. equal in area, volume, etc., but not of the same shape.
In that case, the two figures are "similar".
It is similar.