What is it?
Two geometrical objects are called similar if they both have
the same shape, or one has the same shape as the mirror
image of the other. More precisely, one can be obtained from the other by
uniformly scaling (enlarging or shrinking), possibly with
additional translation, rotation and reflection.
This means that either object can be rescaled, repositioned, and reflected, so
as to coincide precisely with the other object. If two objects are similar, each
is congruent to the result of a uniform scaling of
the other.
the same shape, or one has the same shape as the mirror
image of the other. More precisely, one can be obtained from the other by
uniformly scaling (enlarging or shrinking), possibly with
additional translation, rotation and reflection.
This means that either object can be rescaled, repositioned, and reflected, so
as to coincide precisely with the other object. If two objects are similar, each
is congruent to the result of a uniform scaling of
the other.