Question

Similar triangles - Please help:

http://gyazo.com/7f0032390be3a3b9f0677074b5ddb86e

Answer 1

which one do you think?

Answer 2

look at the numbers carefully

Answer 3

I don't really know. I've never come across a problem like this

Answer 4

flip the triangles to where the angles are in all the same position

Answer 5

D, and A?

Answer 6

yup :D

Answer 7

Thanks :)

Answer 8

The 25 degree angle exists in all triangles.
In all triangles, 2 sides are given.
I triangles a, b and d, the two sides whose lengths are known includes the known angle of 25 degrees. But in triangle c, the two known sides do not include the known angle 25.

In triangles a, b and d, the sides the known sides that include the 25 degree angles are all in the same ratio: 6/12 = 8/16 = 3/6

Therefore, triangles a, b and d are similar.

Answer 9

when you reduce 8/16 it won't equal to 6/12 or 3/6 so b wouldn't be apart of it

Answer 10

@aum

Answer 11

8 / 16 = 1/2
6 / 12 = 1/2
3 / 6 = 1/2

Answer 12

Hey can you help with a similar polygon question?

Answer 13

oh yup whoop you're right :p sorry hehe ive been up too long @aum

Answer 14

sure @epistemology

Answer 15

http://gyazo.com/d33a27ec595fb1bab16f734733d5d6c9

Is this #1 and #4?

Answer 16

and wait, was the first answer wrong?

Answer 17

yeah @aum was right it was a,b, and d

Answer 18

you are right on the second problem though @epistemology

Answer 19

Yes, #1 and #4 for the second question.

Answer 20

Thanks! :)