DW>A further little thought. Your method calculates the angle between the
DW>two sides, but it loses track of where the triangle lies. Unless the two
DW>lines are perpendicular, the angle between them can be expressed either
DW>as an acute angle or an obtuse one, the two adding up to pi radians. As
DW>far as I can see, there is no way to tell, from your method, which of
DW>these two possibilities is the correct answer.
DW>Am I right?
DW>                             dow
 You may be right; I haven't analyzed this problem in all its details.
 One could, of course, draw a few sample triangles on graph paper, plug
 the co-ordinates into the formula I have given, & see whether observed
 results (measured by protractor) tally with theory.
-!-
 þ SLMR 2.1a þ Galactic Dept of Wts & Measures: TAKE US TO YOUR LITER!
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