Question

Triangle ABC is similar to triangle DEF

Answer 1

A

Explanation:

AC = 5

DF = 15

5 x 3 = 15

BC = 3

EF = 9

3 x 3 = 9

Do you see the pattern? So as you can see the difference between Triangle ABC and DEF is the multiply/divide 3 so if you want to find DE then you should set it up as:

`(4)/(3)` =
`(DE)/(9)` and to check if its right if you solve it you get
`(4)/(3)` =
`(12)/(9)`

and as you see
`(12)/(9)` and
`(4)/(3)` are literally the same thing just you need to simplify
`(12)/(9)`

Answer 2

A my dude. good luck!!!!!