# Thread:

1. ## Circle proof

No idea how to get this one out, i know it is probably simple, just can't see it...grrr
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2. Originally Posted by jacs
No idea how to get this one out, i know it is probably simple, just can't see it...grrr
There is something wrong here, or in my interpretation of this
problem. $\angle CGF$ is right, and $\angle CAF$ cannot be right as $AF$
is a cord and not a tangent to the circle with centre $O$. But opposite
angles in a cyclic quad add to 2 right angles!

RonL

3. Looks like the question has been structured incorrectly then, since it is a scan straight from the actual paper. I will go in and smack my teacher (lol....only joking, will point it out very politely and then glare since i spent so much time trying to work it out....grrrr)

jacs

4. Originally Posted by jacs
Looks like the question has been structured incorrectly then, since it is a scan straight from the actual paper. I will go in and smack my teacher (lol....only joking, will point it out very politely and then glare since i spent so much time trying to work it out....grrrr)

jacs
You should check what I wrote, to be sure you agree with its argument.
We can all make mistakes, and so benefit from others checking our work.

RonL

5. Originally Posted by CaptainBlack
You should check what I wrote, to be sure you agree with its argument.
We can all make mistakes, and so benefit from others checking our work.

RonL
Speak for yourself, I never make mistakes

6. Originally Posted by ThePerfectHacker
Speak for yourself, I never make mistakes

lol..... heee heee

yes i went over it a number of times and your reasoning looks good to me. I have treid to prove that question over and over and jsut coudltn get it to work, least i know why now

thanks
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