Question

Similarity question.

Answer 1

8? I have an answer, but what did you get?

Answer 2

if its similat then they will scale; whats the scalar from 2 to 1.2?

Answer 3

@amistre64 , this question has been posted for seven minutes and the second I click on it, you show up. That is undoubtable proof that you entered the question only because I showed up.

Answer 4

coincidence really ...

Answer 5

I just want to get help, you guys! :P

Answer 6

how do we get from 2 to 1.2 by a scalar?

Answer 7

.6?

Answer 8

yes

Answer 9

now multiply the rest of the sides by .6 and see if we get the same results on the next one

Answer 10

if they match up, its similar; if not, then its not

Answer 11

I get \[1 \frac{2}{3} \] for the scale factor

Answer 12

Um. What if I just find the volume, and then compare it like that?

Answer 13

how will volume be comparable? you have to compare multiple values; and volume dont give you that

Answer 14

2n = 1.2

n = .6

right?

Answer 15

yes

Answer 16

volume is just one value; its like asking of 4 is similar to 7 ... you need more than one point of reference

Answer 17

we have 3 points of reference to chk

Answer 18

you can also gi with dividing the sides to find if it has a common ratio

Answer 19

So this figure is similar.

Answer 20

A B C
-- = -- = -- ; then it would be similar
a b c

Answer 21

Is it similar?

Answer 22

is 2.7
--- = .6?
4.5

Answer 23

calculator says it is, so yes

Answer 24

Are the rest similar too? I worked all of them out, and got similar for all of them by using the volume

Answer 25

how do you use volume?

Answer 26

I'm pretty sure the scale factor is 1 and 2/3 but okay

Answer 27

@Hero it has to be a ratio

Answer 28

@amistre64 I just did :P Are they similar? I find them to be all similar and don't understand how

Answer 29

.6 is a ratio, but 1 and 2/3 is not. Hmm, okay

Answer 30

\[2*\frac{5}{3}=\frac{12}{10}\]

Answer 31

@Hero Sorry! I'm just really confused at the moment.

Answer 32

\[\frac{12}{10}*\frac{5}{3}=2 ?\]

Answer 33

that might be an option if we go from right to left

Answer 34

but it asks from left to right

2n = 1.2 is a scalar from left ot right

Answer 35

amistre you should got back and re-read the instructions.

Answer 36

Are the figures all similar, do you think?

Answer 37

scale factor = big to small

Answer 38

3 to 1.8 = 3:1.8 = 1 and 2/3

Answer 39

3*.6 = 1.8

Answer 40

hmmm, i might have to review my terminology :)

Answer 41

5:3? @Hero

Answer 42

Yes I would call that the scale factor

Answer 43

Amistre is a little mixed up on his terminology

Answer 44

ive been doing vectors to long to recall what it means in geometry ;)

Answer 45

No excuses

Answer 46

i know, i know

Answer 47

Okay, and I'm so sorry, but are the rest similar as well?

Answer 48

I just want to know if I'm doing it correctly

Answer 49

http://www.watertown.k12.ma.us/wms/math/math_help/gradeseven/stretching/scale%20factor.htm

For @amistre64

Answer 50

ignored, okay.

Answer 51

sakigirl, if the ratio of all the corresponding sides of two objects are similar, then both figures must be similar.

Answer 52

I'll just call 'em all similar. Thanks.

Answer 53

No, don't

Answer 54

So is 1 similar by 2:1?

Answer 55

Yes, correct

Answer 56

You mean number 5 is similiar by scale factor 2:1

Answer 57

It says determine the scale factor from the first to the second, so it's the largest to the smallest?

Answer 58

Not in every case.

If the first object is larger and the second object is smaller, then the scale factor is large:small

However, if the first object is small and the second object is large, then the scale factor is small:large

Answer 59

So basically the first figure to the second figure?

Answer 60

Yes

Answer 61

Pretty simple, right?

Answer 62

However, you still have to make sure they are similar by testing at least two sides.

Answer 63

Okay thanks you :)