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+%This package is used to draw the figure of an angle with
+%
+%It accept 3 options (pstricks,tikz and inclusion) to determine how
+%the drawing should be done.
+
+\newbox\AngleBox
+
+%Value (in degrees) of the theta angle shown in the trigonometric
+%circle (in page 4) and in the three point angle in page 5.
+\providecommand\ThetaAngle{35}
+
+\ifcase\DrawMethod
+ %TikZ
+ %length of the base of the angle.
+ \newlength{\anglebase}
+ %and the length of the other side of the angle
+ \newlength{\angleside}
+
+ %Radius of the circle for drwaing a point
+ \newlength{\PointRadius}
+\or
+ %Inclusion
+ \relax
+\else
+ \relax
+\fi