\begin{tikzpicture}[scale=.75] \tkzDefPoints{0/0/A,8/0/B,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=Maroon!30](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}