Prove that the two circles shown below are similar.
About to post picture.
but i am pretty sure that i need to find the radius first. to get the dilation.. how do i do that?

Question

Prove that the two circles shown below are similar.
About to post picture.
but i am pretty sure that i need to find the radius first. to get the dilation.. how do i do that?

littlet · Answer

attachment

arcadiouse · Answer

Multiply the points by the scale factor.

littlet · Answer

How do i find the scale factor?

arcadiouse · Answer

To find the scale factor, locate two corresponding sides, one on each figure. Write the ratio of one length to the other to find the scale factor from one figure to the other.

littlet · Answer

2/5 is the scale factor?

arcadiouse · Answer

well, small circle is half the hieght of the big one...

littlet · Answer

?

arcadiouse · Answer

Hold on.  I have done scale factor in a while. Let me get my answer.

arcadiouse · Answer

Havent*

littlet · Answer

ok

arcadiouse · Answer

I have never done scale factor on circles.  I am sorry but cant help you.

littlet · Answer

alright. thanks for trying

arcadiouse · Answer

Its good.  Use the formula though.