From baea2de648941d9a729477cbdcbcbfb096253dde Mon Sep 17 00:00:00 2001
From: Karl Berry <karl@freefriends.org>
Date: Sat, 11 Apr 2020 22:43:09 +0000
Subject: tkz-euclide (6apr20)

git-svn-id: svn://tug.org/texlive/trunk@54669 c570f23f-e606-0410-a88d-b1316a301751
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diff --git a/Master/texmf-dist/doc/latex/tkz-euclide/TKZdoc-euclide-rapporteur.tex b/Master/texmf-dist/doc/latex/tkz-euclide/TKZdoc-euclide-rapporteur.tex
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+\section{Protractor}
+Based on an idea by Yves Combe, the following macro allows you to draw a protractor. 
+The operating principle is even simpler. Just name a half-line (a ray). The protractor will be placed on the origin $O$, the direction of the half-line is given by $A$. The angle is measured in the direct direction of the trigonometric circle.
+
+\begin{NewMacroBox}{tkzProtractor}{\oarg{local options}\parg{$O,A$}}%
+\begin{tabular}{lll}%
+options    & default & definition     \\ 
+\midrule
+\TOline{lw}  {0.4 pt} {line thickness}
+\TOline{scale}  {1} {ratio: adjusts the size of the protractor} 
+\TOline{return} {false} {trigonometric circle indirect}
+\end{tabular}
+\end{NewMacroBox}
+
+
+\subsection{The circular protractor} 
+Measuring in the forward direction
+
+\begin{tkzexample}[latex=7cm,small] 
+\begin{tikzpicture}[scale=.5]
+\tkzDefPoint(2,0){A}\tkzDefPoint(0,0){O}
+\tkzDefShiftPoint[A](31:5){B}
+\tkzDefShiftPoint[A](158:5){C}
+\tkzDrawPoints(A,B,C)
+\tkzDrawSegments[color = red,
+    line width = 1pt](A,B A,C)
+  \tkzProtractor[scale = 1](A,B) 
+\end{tikzpicture}
+\end{tkzexample}  
+
+\subsection{The circular protractor, transparent and returned}
+
+\begin{tkzexample}[latex=7cm,small] 
+\begin{tikzpicture}[scale=.5]
+  \tkzDefPoint(2,3){A}
+  \tkzDefShiftPoint[A](31:5){B}  
+   \tkzDefShiftPoint[A](158:5){C}   
+  \tkzDrawSegments[color=red,line width=1pt](A,B A,C)
+  \tkzProtractor[return](A,C) 
+\end{tikzpicture}
+\end{tkzexample}
+  
+
+\endinput
\ No newline at end of file
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