A transformation in mathematics is when a figure changes in some way. It's Size orentation and/or location may change. Transformations can be rigid_ or nonrigid When a transformation occurs, the original figure, or pre-image, is mapped to generate the new transformed figure, or _image If pre-imag. Triangle ABC is mapped to image triangle _A'B'C' Then A-> A B-> B'_and C -> C' Note: the image will often use the same letters as the pre-image but with a tick mark in the top right corner. The letters with the tick marks are called _prime The letter A' in the image is read " A Prime TRANSLATIONS (under what happened to the triangle ) - Watch Video 2 The triangle simply moved from location to another. It did not change shape or size. It did not turn around Therefore, a translation can be defined as the movement of a figure from one location to another without a change in the size, shape or orientation This is also known as a rigid motion in geometry. A rigid motion is the action of taking a object and moving it to a different location without changing its size and shape