Question

A _________ of the plane is a transformation which shifts all the points in a plane figure, without altering the shape of the figure.

Answer 1

A translation.
Hope this helps.

Answer 2

Translation is such a transformation which shifts all the points in a plane figure, without altering the shape of the figure.

Explanation:

" In a translation transformation all the points in the object are moved in a straight line in the same direction. The size, the shape and the orientation of the image are the same as that of the original object "

Hence, Translation is the answer.

( i.e. A Translation of the plane is a transformation which shifts all the points in a plane figure, without altering the shape of the figure )