What would be the missing step in this proof?

Question

anonymous · Answer

attachment

sammixboo · Answer

What do you think it is

anonymous · Answer

B?

sammixboo · Answer

An angle bisector is a ray, or a line, that divides an angle in half, and that line is EO

B is already proof, so B is not the answer

here_to_help15 · Answer

When sammi is around you gotta give aa full detailed explanation :P

anonymous · Answer

Oops, didn't see it was used. A?

sammixboo · Answer

So what ever pattern that has 'EO' or 'OE' in there is your answer.

We already know that it isn't B, because that is already proof, and there is no angle bisector in the pattern. 

Does A have the EO or OE pattern?

sammixboo · Answer

In the pattern in choice A does it have EO or OE in it?

sammixboo · Answer

In that specific order

nikato · Answer

Wait, apex is right when he/she said B

sammixboo · Answer

This is hard to explain

anonymous · Answer

Nope

jim_thompson5910 · Answer

not sure what you meant by "B is already proof, so B is not the answer"

jim_thompson5910 · Answer

Here is angle DEF

|dw:1415677667831:dw|

jim_thompson5910 · Answer

segment EO cuts it in half perfectly

|dw:1415677688945:dw|

jim_thompson5910 · Answer

which means that the two smaller pieces that are created are congruent to one another

|dw:1415677716649:dw|

anonymous · Answer

So it is B, right?

nikato · Answer

Yes

anonymous · Answer

Alright, thank you all :)

sammixboo · Answer

Sorry about that

anonymous · Answer

Its fine :)

sammixboo · Answer

I got myself confused when explaining