\input{preamble-standalone.ltx} \begin{document} % Ex. No. 136 (Section 17.8.2 : Example: use of "Clip" for Sangaku in a square) \begin{tikzpicture}[scale=.75] \tkzDefPoint(0,0){A} \tkzDefPoint(8,0){B} \tkzDefSquare(A,B) \tkzGetPoints{C}{D} \tkzDrawPolygon(B,C,D,A) \tkzClipPolygon(B,C,D,A) \tkzDefPoint(4,8){F} \tkzDefTriangle[equilateral](C,D) \tkzGetPoint{I} \tkzDrawPoint(I) \tkzDefPointBy[projection=onto B--C](I) \tkzGetPoint{J} \tkzInterLL(D,B)(I,J) \tkzGetPoint{K} \tkzDefPointBy[symmetry=center K](B) \tkzGetPoint{M} \tkzDrawCircle(M,I) \tkzCalcLength(M,I) \tkzGetLength{dMI} \tkzFillPolygon[color = orange](A,B,C,D) \tkzFillCircle[R,color = yellow](M,\dMI pt) \tkzFillCircle[R,color = blue!50!black](F,4 cm)% \end{tikzpicture} \end{document}