Question

Are the two triangles similar? If so, how do you know?

Answer 1

i think its D. am I correct?

Answer 2

D is correct. they aren't similar.

Answer 3

I say no.

Answer 4

@JUICEDECAFE How?

Answer 5

they are similar

Answer 6

If they are then explain because i don't see how

Answer 7

did you look at the picture?

Answer 8

?

Answer 9

if triangles are similar then corresponding sides are in the same ratio
take the longest sides:

12 / 8 = 1.5
and the other pairs of sides
7.5 / 5 = 1.5
7.5 / 5 = 1.5

so they are similar

Answer 10

^

Answer 11

did you look at the picture?

Answer 12

i'm so confused now.

Answer 13

yes

Answer 14

they are similar - though i must admit i'm a little confused with the reasons

Answer 15

My opinion is D.

Answer 16

and yours opinion is different

Answer 17

similar triangles are the same shape but different size. also corresponding angles are equal

Answer 18

i'm afraid your opinion is wrong, juice...

Answer 19

My opinion is right. And i don't have time for arguing :) so Have a Wonderful Day!

Answer 20

you too

Answer 21

i have no idea if i'm right or wrong. i'm so lost now

Answer 22

I still think it's still A.

Answer 23

SSS?

Answer 24

Yes. Am i wrong? Im not 100% sure.

Answer 25

i've only seen SSS with respect to congruent triangles - but as we've shown that sides are in same ratio then SSS makes sense , i suppose

Answer 26

i'm same as you - not completely sure

Answer 27

@vivianrush
@cwrw238 is correct
The correct answer is A.

This way of proving triangles similar is called SSS Similarity. If you show that the lengths of three sides of one triangle are proportional to the lengths of the sides of another triangle, then the triangles are similar.
This is one of three ways of proving triangles similar. The others are AA, and SAS Similarity.
AA is: if two angles of one triangle are congruent to two angles of another triangle, the triangles are similar.
SAS Similarity is: if the lengths of two sides of a triangle are proportional to the lengths of two sides of another triangle, and the included angle of one triangle is congruent to the included angle of the other triangle, then the triangles are similar.