# Thread: How long does it take you to solve this geometric puzzle?

1. Originally posted by roygoh
Anyone solved this already?

Still trying to solve the @!\$@#%@#\$%# problem...

2. Originally posted by AdamGoi

Still trying to solve the @!\$@#%@#\$%# problem...
Well, I spent 2 weeks worth of toilet and bedtime reading time to solve this @!\$@#%@#\$%# problem.

I have already typed up the solution and will post it here in 2 weeks time.

In the mean time, keep trying!

- Roy

3. [hint] you've gotta draw a line, then everything will be crystal clear... [/hint]

4. 40 rite?

5. geez. it's harder than it looks!

6. Still trying to solve the @!\$@#%@#\$%# problem...

7. Wah piang my brain already short circuiting liao... and I always was teerible in maths!!!

8. the solution is simple. dont think too complex. all the methods except one is already discussed. and the remaining one is elementary.

9. hmmm... my answer is 20degrees. Spent 10sec solving but dunno if the qn is solved

10. A stab in the dark answer..60 degrees

11. I got 30 deg. There are 3 triangles with the same angles and another 2 with another same set of angles. Am I right ?

12. heh, if you think too deep and goes "&%^%(&%)*&", then you're most likely using the wrong method

there's two BIG hint above.

Add one more -> no complex formula involved. Think outside the box

13. 5 web developers
1 marketing manager
1 designer
5 days

problem still unsolved.

Regards
CK

14. Originally posted by rlce
I got 30 deg. There are 3 triangles with the same angles and another 2 with another same set of angles. Am I right ?
?? how did you come up with the 3 triangles with same angles and 2 with same angles from?????

hmm... i'm stuck also...

15. wah me took at least 30 minutes but what I got was 30 degrees too..... but still not sure if my method is correct hhmmmm but I did draw a line and I did try to think out of the box? hhmmmm

16. 30 degrees. Using simple geometric formulas.

17. refresh my memory...
what are the geometry formulas?
I only remember all angles of the triangle add up to 180.. heee..

18. Personnel related:
1 Project Manager
1 Engineer

30 Degrees

Time Taken:
Took whole afternoon.

19. OK, here's the link to the solution.

I am sure this is not the only solution. You are welcomed to post your version here for comparison.

Thanks!

Roy

20. Originally posted by roygoh
OK, here's the link to the solution.

I am sure this is not the only solution. You are welcomed to post your version here for comparison.

Thanks!

Roy
Don't quite understand, why "Add Point F on side AC such that angle FBC = 20°" ?

Where is the 20° derived from?

Regards
CK

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