Question

need help with a geometry question!

Answer 1

check what sides have not proportionale bc. two similar triangles need have the corresponding sides being proportionale - ok ?

Answer 2

How do i check if they're proportional?

Answer 3

do you see what side with what side is correspond ?

Answer 4

yes

Answer 5

it seems like the triangle on the right is 2.5 more than the one on the left except side EF (which corresponds to BC) but thats probably not the right answer lol

Answer 6

so for example 10 with 12,5

than you try dividing them

10 2
---- = ----
12,5 2,5

so you get you get a proportionalitie between these two sides of 2/2,5

yes ?

Answer 7

so now try these other two cases please

Answer 8

ok so for the other side it would be 8/10.5 = 1.6/5.25???

Answer 9

yes so do you think that these need being corrected ?
or you will check the third sides too ?

Answer 10

15/18.75 = 7.5/7.5 is the third side right?

Answer 11

no i thikn this not is solved right above from you - please check your work

Answer 12

i divided 15 by 2 and then i divided 18.75 by 2.5

Answer 13

how you simplifie two numbers - ? first try getting their factor and divide them by this common factor - or not ?

Answer 14

so do you see it what number will be common factor for 15 and 18,75 ?

Answer 15

3?

Answer 16

yes but bc. every two numbers ending in 5 this is more easy to factoriz them by 5 used - or not ?

Answer 17

yeah but would it be 15/18.75 = 5/3.75??

Answer 18

i divided both by 3

Answer 19

ok but please try it divided by 5 firstly - ok. ?

Answer 20

15/18.75= 3/3.75?

Answer 21

how you got 3,75 here too same above ?

Answer 22

i think above you missed anything - yes ?

Answer 23

i divided 15 by 5. then i divided 18.75 by 5. was that wrong?

Answer 24

this is right but above these how you have got in denominator 3,75 too ? do you see it now where ?

Answer 25

where the numerator is got 5

Answer 26

yeah all the denominators have 5 in them

Answer 27

but i don't see what side matt needs to fix... all of them are different

Answer 28

yeah but would it be 15/18.75 = 5/3.75??

and below to this you wrote

15/18.75= 3/3.75?

do you see it now ?

Answer 29

oh yeah i think i accidentally divided 18.75 by 5 before

Answer 30

thats why both are 3.75

Answer 31

do you can correct it please ?

Answer 32

Ok i have 15/18.75. the common factor for both of them is 5. So: 3/3.75. I don't see what is wrong. You said i had to divide them by 5

Answer 33

no - this is now correct sure

so but when you divide them by 3 what will get ?

Answer 34

if i divide them by 3 it would be 15/18.75 = 5/6.25

Answer 35

exactly so now you can tel me where is needed correcting the sides proportion - yes ?

Answer 36

i don't know which one is wrong... their proportionalities are all different

Answer 37

ok for you can understanding it right when two triangles are similar the corresponding sides need being proportionale and using thses proportionalitie of sides we can proving that these triangles are similar sure

so you can writing in this case of proofe that

8/10,5 = 10/12,5 = 15/18,75

so can you check where is wrong these equalitie between these fractions ?

Answer 38

the third one?

Answer 39

does he need to fix the third sides?

Answer 40

you there?

Answer 41

so in the first case we get

2/2,5 = 0,8

second case was

15/18,75 = 3/3,75 = 0,8

3rd case was

8/10,5 = 4/5,25 = 0,761

so do you see it now where is the wrong proportionalitie ?

Answer 42

Sofia are you here please ?

Answer 43

oh ok so the wrong one is side AC/DF

Answer 44

yes?

Answer 45

@jhonyy9 so how can he fix that sides

Answer 46

@jhonyy9 i still need help please

Answer 47

matt needs to change side DF to 10 units instead of 10.5 right

Answer 48

so that all the sides are in 0.8 proportion ratio

Answer 49

no all the sides need have this proportionalitie of ratio - yes
but how you see and how we get there are two corresponding what not have this proportionalitie of ratio so this you need correct it
ok. ?

Answer 50

what? i don't understand. what do i need to correct?

Answer 51

this ratio of these two sides where we not got this ratio equal by 0,8

Answer 52

8/10,5 need being equal 0,8

how can you correct it ?

Answer 53

i already told you... change side DF from 10.5 to 10. so that 8/10 = 4/5 = 0.8

Answer 54

ohhh - sorry i dont saw it - yes this is the right step sure

Answer 55

so do you understand it now these all clearly ?

Answer 56

than was my pleasure

good luck

bye bye

Answer 57

yes i got it! thank you so much for helping me @jhonyy9