Polygon question #3

Question

Polygon question #3

callisto · Answer

This one may not be difficult

anonymous · Answer

Solved! ;)

callisto · Answer

Hmm... congratulations. But it's not a 'Fool's problem of the day' or lgba's riddle type question, sorry ....

anonymous · Answer

Callisto's problems are cool too!

callisto · Answer

Not cool, and not in that sense (or purposes) though

thomas5267 · Answer

Is it A?  @FoolForMath

callisto · Answer

@FoolForMath !!!!!!!!!!!!!!!!

callisto · Answer

He left without saying a word :'(

callisto · Answer

The answer is not A

thomas5267 · Answer

Similar triangles again I think.

anonymous · Answer

lol sorry, I was doing something else.

HINT: Can you see two trapezium?

callisto · Answer

I see 3...

anonymous · Answer

Amazing :D Find the height of the lower one (3+2) then find the height after than you can find FD

callisto · Answer

Height = 2, but how to find FD?

callisto · Answer

Wait. Let me try first.

thomas5267 · Answer

My instinct tell me that there is a 90-60-30.

callisto · Answer

Hmm.. my sixth sense never works..and I give up :S

thomas5267 · Answer

Give me FD and I should be able to calculate AB.

callisto · Answer

♪ If only I could find FD ♪

anonymous · Answer

answer is 4.5 
only use the ratio of sides & you will get the answer

callisto · Answer

Answer is NOT 4.5!

thomas5267 · Answer

My drawing is this but I have no idea what to do with it.
|dw:1334240322766:dw|

experimentx · Answer

is there an option called 7??

thomas5267 · Answer

Is that B?  Just trusting my sixth sense.

callisto · Answer

nope :(

callisto · Answer

@thomas5267 yes

thomas5267 · Answer

I have completely no idea why that is right.  I usually can derive some useful formula from my sixth but not this time as I am WAYYYYYY to tired.

callisto · Answer

I'm so sorry.... that .... I must go now....

thomas5267 · Answer

So am I, verrry sleep......y.

anonymous · Answer

|dw:1334234659345:dw|
okay I got it