Question

Prove that the two circles shown below are similar

Answer 1

http://learn.flvs.net/webdav/assessment_images/educator_geometry/v15/module09/09_08_9.jpg

Answer 2

@is3535

Answer 3

cookie error comes when i open the link

Answer 4

SAME WITH ME.

Answer 5

humm okay one sec let me screen shot the image and post it :p

Answer 6

me to

Answer 7

there u go let me know if that works

Answer 8

yes it works

Answer 9

no ther no simliar B is 5 and D 7 i say

Answer 10

okay can yall help me? this is what i have so far.. idk if its right All circles are similar because you can scale one circle to be the same size as another (bigger or smaller) circle. They effectively have the same shape.

Answer 11

im not 1000 % that i said

Answer 12

humm... i dont think that is right haha

Answer 13

you can go from one figure to the other with a translation and a dilation, does that make them similar?
im not so sure...

Answer 14

what if i say this??
Theorem: Any two circles are similar.

Proof: Given a circle of radius r and a
second circle of radius R , perform a
translation so that their centers coincide.

A dilation from the common center of the
circles with scale factor R takes the
points of one circle and maps them onto the
second.

Thus we have mapped one circle onto the
other via a translation and a dilation. The
circles are simila

Answer 15

First circle with center (-1,5) and radius=4
second circle with center (7,4) and radius =2

Answer 16

@CayleeS23 ... where did you get that theorem from?

Answer 17

Their similar because

Answer 18

http://www.jamestanton.com/wp-content/uploads/2012/03/Curriculum-Newsletter_January-2013.pdf

Answer 19

hello???

Answer 20

looks like they are similar, and the proof would be what @CayleeS23 posted before...

Answer 21

im confused...

Answer 22

listen

Answer 23

very simple

Answer 24

their both round and they both have no sides

Answer 25

proved

Answer 26

feel free to fan and medal me

Answer 27

no that doesnt prove anything haha get otta here dude...

Answer 28

i guess a better proof would be taking the ratio of their perimeter to their radius for each of them, you will get the same in both cases, actually you get:
\[2\pi\] for any circle
so they are similar

Answer 29

I tried. I failed/

Answer 30

hey
sometimes the answer is easier than you think

Answer 31

ohh okay that makes since so should i just put that?? proof would be taking the ratio of their perimeter to their radius for each of them, you will get the same in both cases, actually you get:
2π
for any circle
so they are similar

Answer 32

can u show me how u did that math? to prove that they are both 2pi

Answer 33

this is pi