In this lesson our instructor talks about dilation. First she discusses dilations and scale factor. Then she talks about positive and negative scale factor. She also lectures on enlargement and reduction. Four extra example videos round up this lesson.
Dilation: transformation that alters the size of the geometric figure, but does not change its shape
Scale factor (k): the ratio between the image to the pre-image
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.