Question

The ratio of the perimeter of triangle ABC to the perimeter of triangle DEF is 8/9
what is similarity ratio of triangle ABC to triangle DEF

Answer 1

http://answers.yahoo.com/question/index?qid=20110319004924AATySb0 That should help you do it.

Answer 2

i don;t understand

Answer 3

don't

Answer 4

@satellite73

Answer 5

@jim_thompson5910
@hartnn

Answer 6

wat are the units of perimeter ?

Answer 7

this is all it gives

Answer 8

yes, wat i meant is... to notice that units of 'perimeter' are same as units of 'length'

Answer 9

she never gave the picture for it like it says it was supposed to have

Answer 10

so,

similarity ratio = ratio of perimeters = 8/9

Answer 11

wait what?

Answer 12

picture is not needed :)
its just a trick question... and the answer at yahoo-answers is incorrect

Answer 13

so it is 8/9?

Answer 14

yup
let me knw if u wish to look for a simple proof... why/how ratio of perimeter gives the similarity ratio

Answer 15

actually, u can use any of below ratios :

1) perimeters
2) length of sides
3) altitudes
4) medians

etc...

Answer 16

they all give u the similarity ratio

Answer 17

they all give the same answer.

Answer 18

The ratio of the area of triangle ABC to the area of triangle DEF is 16/25
what is similarity ratio of triangle ABC to triangle DEF

Answer 19

what about that one?

Answer 20

same thing?

Answer 21

nope, now we need to do bit work

Answer 22

ok

Answer 23

walk me through it
please

Answer 24

use this :
if the ratio of areas is \(r\), then the ratio of sides is \(\sqrt{r}\)

Answer 25

and u knw that ratio of sides gives u similarity ratio

Answer 26

so simply take square-root of the given area ratio

Answer 27

? i was sick the day we did this got no i dead what your saying

Answer 28

had asthma attack
not pretty

Answer 29

please can you try to explain more so i can understand?