Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Need help writing an entire two-column proof
Replies: 4   Last Post: Nov 12, 1998 11:13 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
TiGER

Posts: 7
Registered: 12/6/04
Re: Need help writing an entire two-column proof
Posted: Nov 12, 1998 11:13 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

In article <364AD61E.27EB@world.std.com>, pash@world.std.com says...
> TiGER,
>
> You left something out of your given. The hypothesis of the theorem
> contains the word "altitude". An altitude is not just any old line from
> one vertex to a point on the opposite side. What does the fact that AC
> is an altitude say about the relationship between AC and BD?
>
> A hint for the proof: Another way of saying "AC bisects the angle BAD"
> is "angle BAC = angle CAD".
>
> By the way, the kinds of questions you are asking are things you should
> be able to ask your teacher, I think.
>


I think I understand it now. To start off this is how it goes:
Given: Triangle BDA is isosceles with base Segment AD.
Segment AC is perpendicular to Segment BD.

To Prove: Segment AC bisects Angle BAD

That seems correct to me. The part about Angle BAC = Angle CAD would
be used in proving the theorem, I think. Well now that I know what to
prove and what is given I should be able to know how to prove it,
especially with the information LCrand2228 provided. Thank you both.

A little note on the side - I'm home schooling so a teacher isn't
available. This is the only subject that I think a teacher is NEEDED
for, at least to me. The rest I can get by fine.





Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2013. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.