Geometry 7.2a, Dilations & Similarity Transformations

[@JoAnnsSchool]

At 5:00 I accidentally referred to the squares as triangles. Sorry!

[@potatojamfam7561]

Your videos help so much thanks!

[@Melatonin1111]

This helped a lot. Thanks!

[@mattrhoades9487]

Is it too advanced to talk about doing the last example in a single transformation? Finding the center of the transformation (xc, yc) via intersection(m1*x + b1 = m2*x + b2) of any two lines formed from the pre-image to the corresponding points of the image (for example lines (y = mx+b) formed from segment AD and segment FB (using slope and intercept technique from prior classes) and then using the transformation D: ((x-xc), (y-yc)) -> (k(x-xc), k(y-yc)) where in this example xc = 15/2, yc = -3/2 and k = 3. I know we have not covered handling a non "(0,0)" center dilation yet and do not know whether that's coming up at any point in this class. For those who read the comments, the D transformation I provide basically does a coordinate translation that puts the center of the dilation at 0,0 in a new coordinate frame, does the dilation, and then puts its back into the original coordinate frame hence why both sides have (x-xc, y-yc) terms. Love your videos. I'm putting Likes on as I go.

[@JoAnnsSchool]

I would go with my gut. You know your class and if they can handle it. There are teachers that use packets and teach the bare minimum or less (