Question

!!A DIFFICULT QUESTION!!
Using only elementary geometry, determine angle a step-by-step proof.
You may use only elementary geometry, such as the fact that the angles of a triangle add up to 180 degrees and the basic congruent triangle rules (side-angle-side, etc.). You may not use trigonomery, such as sines and cosines, the law of sines, the law of cosines, etc. There is a review of elementary geometry below.
This is the hardest problem I have ever seen that is, in a sense, easy. It really can be done using only elementary geometry. This is not a trick questi

Answer 1

Can anyone........

Answer 2

fig..

Answer 3

This problem, why did it have to be this problem... With my mind on this hellish problem, I shall go to bed.

Answer 4

Oh, and good luck to everyone else. You'll need it.

Answer 5

I am pretty sure I did this wrong, but by any chance is x = 70? Anyway, I am going to bed and will come back to it tomorrow also. :-)

Answer 6

i answered that already :P

Answer 7

answer once again

Answer 8

that was a very long answer T_T i dont have time to re-solve it..it's a pain in the head :P

Answer 9

@lgbasallote u cant!1

Answer 10

It's quiet lengthy but I can fix it

Answer 11

Why did you post it again?

Answer 12

doubt!

Answer 13

@Rohangrr do you want to post me answer only? i will solve and post answer post procedure is too lengthy

Answer 14

What doubt? FoolForMath gave you at least 4 to 5 ways of solving this problem? What doubt do you have now?

Answer 15

i got x=25

Answer 16

If memory serves, the reference I posted has eight solutions.

Answer 17

repost! lol jk =))

Answer 18

It's at here:

http://openstudy.com/study#/updates/4f758597e4b0f07ddab1a2de

Answer 19

@ParthKohli can u do it!

Answer 20

@Ishaan94 can u!

Answer 21

@experimentX pls help!

Answer 22

I can't do it, sorry. This problem is too tough for me.

Answer 23

Wait. I can maybe

Answer 24

Can you message me? It'd be too long if I keep going here. I know what to do :D