Question

Help me please thanks

Answer 1

Given:

Triangle ABC and triangle DEF are similar triangles.

To find:

The proportion that can be used to find the length of segment DE.

Solution:

We know that the corresponding sides of similar triangles are proportional.

Triangle ABC and triangle DEF are similar triangles. So, their corresponding sides must be proportional.

`(AB)/(DE)=(BC)/(EF)=(AC)/(DF)`

`(AB)/(DE)=(BC)/(EF)`

`(4)/(DE)=(3)/(9)`

`(4)/(3)=(DE)/(9)`

Therefore, the correct option is A.