Scale Factor and Dilations

[KyleM]

I don't understand how to even start this problem. I started in the middle of the school year and I was doing other geometry before this and they didn't talk about this at all. How do you figure it out? Thanks

Polygon ABCD is dilated, rotated, and translated to form polygon A′B′C′D′. The endpoints of [FONT=MathJax_SansSerif]A[/FONT][FONT=MathJax_SansSerif]B[/FONT]

are at (0, -7) and (8, 8), and the endpoints of [FONT=MathJax_SansSerif]A[/FONT][FONT=MathJax_SansSerif]'[/FONT][FONT=MathJax_SansSerif]B[/FONT][FONT=MathJax_SansSerif]'[/FONT]

are at (6, -6) and (2, 1.5). What is the scale factor of the dilation?

 

[Deleted member 4993]

I don't understand how to even start this problem. I started in the middle of the school year and I was doing other geometry before this and they didn't talk about this at all. How do you figure it out? Thanks

Polygon ABCD is dilated, rotated, and translated to form polygon A′B′C′D′. The endpoints of [FONT=MathJax_SansSerif]A[/FONT][FONT=MathJax_SansSerif]B[/FONT]

are at (0, -7) and (8, 8), and the endpoints of [FONT=MathJax_SansSerif]A[/FONT][FONT=MathJax_SansSerif]'[/FONT][FONT=MathJax_SansSerif]B[/FONT][FONT=MathJax_SansSerif]'[/FONT]

are at (6, -6) and (2, 1.5). What is the scale factor of the dilation?

Length of AB = ??

Length of A'B' = ??