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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 80,897

I am looking at it now. If you change AB the distance varies.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,092

In my diagram and if Y is the point on AC where XY is perpendicular to AC then

AYX and AMX are congruent (SAA) so the size of AB is irrelevant.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,756

It does. But it stays the same as MX.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 80,897

MX changes too because it is a perpendicular bisector of AB. If AB lengthens MX will change too.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

**Online**

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,092

Here's my diagram.

MX is given as 9, so it cannot change.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,756

Hi bobbym

I do not think you understand me. The distance from X to AC is always the same as MX. Bob has a nice proof up there.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 80,897

I am sorry, your comment in post #21 confused me. I already solved this in post#20. I thought you had found something wrong with that answer, and got mixed up.

**In mathematics, you don't understand things. You just get used to them.I have the result, but I do not yet know how to get it.All physicists, and a good many quite respectable mathematicians are contemptuous about proof.**

**Online**

**anonimnystefy****Real Member**- From: The Foundation
- Registered: 2011-05-23
- Posts: 14,756

No, no. I just stated that we do not need the length of AB.

Here lies the reader who will never open this book. He is forever dead.

Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 80,897

Because of the fact that Flux does not tell you when a post has been put just prior to yours, I was posting for your posts and did not see any of his!

My apologies to Bob.

I have the result, but I do not yet know how to get it.

All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

**Online**

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 6,092

No apology necessary. I'm happy to have been able to provide a quick solution. For once my pencil and paper worked more quickly than my software.

Bob

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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