Question

If AB = 3, AD = 5, and DE = 6, what is the length of BC?

Answer 1

https://media.glynlyon.com/g_geo_2013/6/img_geou6a_42.gif

Answer 2

choices:3.5, 3.6, 3.4, 4. given: line BC and line DE are parallel to each other.

Answer 3

I can't do this....

Answer 4

I'm dumb...

Answer 5

are there more knowns?

Answer 6

Um... im looking, but I dont think so. is the image visible?

Answer 7

yes.

Answer 8

well, it's with proportion, angle A is the same for both triangles, and BC and DE are parallel. Thats about all I can find sorry

Answer 9

that means they're similar so they have to scale some how..

Answer 10

their angles should be the same just different sides

Answer 11

yes so this is a question of scaling.

Answer 12

best guess is 3.6 tbh.

Answer 13

yes it's 3.6

Answer 14

3:5, x:6 i think if I remember correctly

Answer 15

really? could you explain?

Answer 16

yes.

Answer 17

the thing is AD=5 and AB=3

Answer 18

so x:6 was right?

Answer 19

so you know one side of the big triangle and you know one side of the small triangle.

Answer 20

Yes that are similar sides

Answer 21

with similar sides, the scale should be through out the triangle no matter which sides you are comparing if I'm not mistaken.

Answer 22

3/5=x/6?

Answer 23

that is correct

Answer 24

yes that's my guess.

Answer 25

I hope that's sufficient.

Answer 26

I see thank you because 3:5= 60%, so 60% of x is 3.6 thank you so much!

Answer 27

That was very useful thank you for explaining