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tikz/triangle-inscribed-circle: added bisectors

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Martin Thoma 2014-12-09 14:19:03 +01:00
parent e35c21fcf1
commit 83cf30ff2e
2 changed files with 15 additions and 1 deletions
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tikz/triangle-inscribed-circle/triangle-inscribed-circle.tex
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@ -39,7 +39,7 @@
% \tkzLabelSegment[right](B,C){$a$}
\tkzDefCircle[in,/tikz/overlay](A,B,C)\tkzGetPoint{I}\tkzGetLength{rIN}
\tkzDrawCircle[R](I,\rIN pt)
\tkzDrawCircle[R,color=red](I,\rIN pt)
\tkzInterLC[R,/tikz/overlay](A,B)(I,\rIN pt)
\tkzGetSecondPoint{ABq}
@ -50,6 +50,20 @@
\tkzInterLC[R,/tikz/overlay](C,A)(I,\rIN pt)
\tkzGetSecondPoint{CAq}
% Get bisectors
\tkzDefLine[bisector,/tikz/overlay](B,A,C) \tkzGetPoint{a}
\tkzInterLL(A,a)(B,C) \tkzGetPoint{a2}
\tkzDrawLine[add=0 and 0.2,dashed](A,a2)
\tkzDefLine[bisector,/tikz/overlay](A,C,B) \tkzGetPoint{c}
\tkzInterLL(C,c)(A,B) \tkzGetPoint{c2}
\tkzDrawLine[add=0 and 0.2,dashed](C,c2)
\tkzDefLine[bisector,/tikz/overlay](C,B,A) \tkzGetPoint{b}
\tkzInterLL(B,b)(A,C) \tkzGetPoint{b2}
\tkzDrawLine[add=0 and 0.2,dashed](B,b2)
% Draw segments
\tkzDrawSegments(I,ABq I,BCq I,CAq)
\tkzLabelSegment[right](I,ABq){r}
\tkzLabelSegment[above](I,BCq){r}