Dilation question.

Question

Dilation question.

anonymous · Answer

attachment

anonymous · Answer

what is this for, what class?

anonymous · Answer

no, i'm not in connections, a friend of mine is but she's not in geometry. I took geometry two years ago but never learned this...

rea201 · Answer

Ok so do you know anything about dilations or ratios?

anonymous · Answer

Somewhat.

rea201 · Answer

Ok, so first off the question asks if it is a reduction or enlargement. What do you think it is?

anonymous · Answer

Reduction.

rea201 · Answer

Correct! Now we know the scale factor is less then one. if it was an enlargement it would be greater than one.

anonymous · Answer

Ok, how do I determine the scale factor after that?

rea201 · Answer

Since we know that they are similar triangles for this one all we have to do is take two similar sides and fine the ration of their lengths.

rea201 · Answer

In this case we are using the legs that i am showing in the figure.|dw:1398210531968:dw|

anonymous · Answer

Ok, they look like the lengths are 1.5 and 4.5

rea201 · Answer

yes.

anonymous · Answer

So,$$\frac{ 1.5 }{ 4.5 }$$

anonymous · Answer

Which is a $$\frac{ 1 }{ 3 } reduction$$

anonymous · Answer

That seems about right. Thank you for helping me.

rea201 · Answer

Correct!!!

rea201 · Answer

Anytime!!

anonymous · Answer

Well, as long as you don't mind, I might tag you in the future.

rea201 · Answer

Ok that is absolutely fine