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**Proof Help**

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**helpmewithproofs****Member**- Registered: 2013-08-15
- Posts: 7

Can someone please help me do a 2 column proof similar to the one below with the given Triangle?

Photo of Triangle: http://i1039.photobucket.com/albums/a477/tricnetworks/IMG_11451.jpg

2 column proof as an example: http://www.wyzant.com/Images/Help/theorem_pf3.gif

*Last edited by helpmewithproofs (2013-08-19 02:56:26)*

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In ΔDEG and ΔFEG

1. Angle DEG = Angle FEG [EG bisects DEF]

2. Angle EDG = Angle EFG

3. EG is common.

Thus, ΔDEG congruent to ΔFEG ⇒DG = FG ⇒ΔDFG is isosceeles

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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**helpmewithproofs****Member**- Registered: 2013-08-15
- Posts: 7

How would you put that in a 2 Colum proof with statements - reasons ?

Thanks for the help

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What is a a two column proof?

'And fun? If maths is fun, then getting a tooth extraction is fun. A viral infection is fun. Rabies shots are fun.'

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

'But our love is like the wind. I can't see it but I can feel it.' -A Walk to remember

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**helpmewithproofs****Member**- Registered: 2013-08-15
- Posts: 7

It is a normal proof but has 2 columns you have to fill out. One column is the statements and one column is the reasons

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,009

hi helpmewithproofs

Welcome to the forum.

How would you put that in a 2 Colum proof with statements - reasons ?

post 2 has most of what you need.

You could throw in the word 'given' for statements that were given in the problem, and the congruency reason is angle/angle/side.

So the only other things you need are a piece of paper, a ruler to draw the columns and a pencil

Good luck with it.

Bob

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

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**helpmewithproofs****Member**- Registered: 2013-08-15
- Posts: 7

Thank your for your responses, but putting it into the 2 column format is still not making sense to me. Can someone please clarify that portion?

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,009

Answered in other thread.

Bob

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

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