A scaled copy is a copy of a figure where every length in the original figure is multiplied by the same number. In other words, a scaled copy is a figure that is stretched or shrunk in a way that does not distort its shape. The scale factor is the number by which each length in the original figure is multiplied to obtain the corresponding length in the scaled copy.
For example, consider a triangle DEF and its scaled copy triangle ABC. If the length of each side in triangle DEF is multiplied by a scale factor of 2, we obtain triangle ABC, which is a scaled copy of the original triangle. In this case, the scale factor is 2, and each side in triangle ABC is twice as long as the corresponding side in triangle DEF.
