\input{preamble-standalone.ltx} \begin{document} % Ex. No. 130 (Section 17.4.1 : The idea is to inscribe two squares in a semi-circle.) \begin{tikzpicture}[scale=.75] \tkzInit[ymax=8,xmax=8] \tkzClip[space=.25] \tkzDefPoint(0,0){A} \tkzDefPoint(8,0){B} \tkzDefPoint(4,0){I} \tkzDefSquare(A,B) \tkzGetPoints{C}{D} \tkzInterLC(I,C)(I,B) \tkzGetPoints{E'}{E} \tkzInterLC(I,D)(I,B) \tkzGetPoints{F'}{F} \tkzDefPointsBy[projection=onto A--B](E,F){H,G} \tkzDefPointsBy[symmetry = center H](I){J} \tkzDefSquare(H,J) \tkzGetPoints{K}{L} \tkzDrawSector[fill=yellow](I,B)(A) \tkzFillPolygon[color=red!40](H,E,F,G) \tkzFillPolygon[color=blue!40](H,J,K,L) \tkzDrawPolySeg[color=red](H,E,F,G) \tkzDrawPolySeg[color=red](J,K,L) \tkzDrawPoints(E,G,H,F,J,K,L) \end{tikzpicture} \end{document}