- HOW DO WE GRAPH DILATIONS?

A dilation is a type of transformation that causes an image to stretch or shrink in proportion to its orginal size. Scale factor is the ratio by which the image stretches or shrinks is known as the scale fctor. Multiply the dimensions of the original image by the scale factor to get the dimensions of the dilated image.

PROBLEM:  Draw the dilation image of triangle ABC with the center of  dilation at the origin and a scale factor of 2. OBSERVE: Notice how EVERY coordinate of the original triangle has been multiplied by the scale factor (x2). HINT: Dilations involve multiplication!

- HOW DO WE IDENTIFY TRANSFORMATIONS

A "transformation" is when you move a figure. There are four different types of transformations such as translation, reflection, rotation, and dilation. A translation is when every point is moved the same distance in the same direction. A reflection is when a figure is flipped over a line of symmetry. A rotation is when a figure is turned around a single point. A dilation is when you make a figure larger or reduce its size.