The dashed triangle is the image of the solid triangle. The center of dilation is (6, 6).

What is the scale factor used to create the dilation?

Question

The dashed triangle is the image of the solid triangle. The center of dilation is (6, 6).

What is the scale factor used to create the dilation?

Noodlearms · Answer

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JamesTDG · Answer

The reduction is from 15 tiles wide to 3 tiles wide, what number do you think 15 would have to be divided by to get 3?

Noodlearms · Answer

5?

JamesTDG · Answer

Correct. Now then, is the figure's translation increasing or decreasing in size? (this will determine the scale factor for the dilation)

Noodlearms · Answer

Increasing?

JamesTDG · Answer

note: the image is what has happened after the events

Noodlearms · Answer

Oh, so it's decreasing

JamesTDG · Answer

yes.

JamesTDG · Answer

oh, uh, I just realized I made an error in helping you, you were supposed to "(image length)/(preimage length)" (apologies, it has been some time since I have did this part of geometry)

Noodlearms · Answer

Oh, no worries at all, do you know the answer?

JamesTDG · Answer

Yes I do, but I wish to work you through the steps so that you don't get stuck in this rut again.

JamesTDG · Answer

So, we know the length of the 2 triangles, right?
Pre-image is the large triangle
Image is the small one
Since the dilation is decreasing the size of the pre-image, you are to divide the length of the image by the length of the pre-image then simplify.

JamesTDG · Answer

IDK if you have to post your response in fraction or decimal form though.

Noodlearms · Answer

Oh I think either is fine

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