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               __
              /  \
             / /\ \	TrIanGLes!
            / /  \ \	 
           / /    \ \		
          / /      \ \
         / /        \ \	   By Ryan Durham, 3/29/98
        / /          \ \	
       / /____________\ \	
       |________________|    e-mail: rdurham@MA.org or Dale324@aol.com
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TRIANGLS.83G:
1. TRIANGLS.83p
2. TRISUB.83p
3. LTRI.83l
4. LTRIA.83.l


This is a very simple, but large, program that has a few coordinate 
geometry skills.

If you tell it the coordinates of the different vertices of a triangle, 
It wil give you the lengths of all the sides, the coords of the 
centroid, and the perimeter of the triangle.  It will also tell you 
Whether the Triangle is Isosceles, Issosceles Right, Right, 30-60, or
is just a plain old generic triangle.

How to use it:

1.  At the main screen, go to the new option. There, you will be promted
to type in the name of the triangle (eg. TRI: ABC)  hit enter, and 
then you will be promted to enter the coordinates of the first vertex. 
THIS IS IMPORTANT: you must put both X and Y on the same input line, 
seperated by comma, like this "A:X,Y" If you do it any other way than 
that, the program will mess up.
	Do this for all of the vertices.
2. Now, back at the main screen, got to the INFO option. A picture of 
your triangle is displayed with all the other pertinent information.
(note: X is the length of the shortest of the three sides. This feature 
is mainly for 30-60 Triangles) Press enter to cycle through to the 
different statistics. The dot you see inside your triangle is the centroid.
p is the perimeter, M is the coords of the centroid.
	You will notice some funny marks on the two of the vertices.  
The Cross represents the first vertex, and the square represents the 
second vertex. The third vertx has been left plain.

That's it!

Note: Sometimes, (i.e. when you haven't inputed a new triangle for a while) 
the display will be a bit messed up, this is because some of the variables 
used for the display have been altered outside of the program.  Statistical 
data isn't corrupt when you see this. just reinsert your triangle coords, 
and the dispaly will reset itself.

Also, I haven't completely debugged it, so please let me know if you get an 
error, or, god forbid, the numbers should be wrong.  I will fix it right away,
and release a new updated version.

B.T.W., if you ever find that you are in the triangle coord input screen and 
you don't want to be there, just input theta on the first line "TRI:" to return 
to the mainscreen without altering your original data.

These programs have been edit locked, but if you would like a copy of the source 
code, e-mail me and I will be more than happy to send you a copy.

I hope this program serves you well. 

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