\begin{tikzpicture}[scale=.8,rotate=60] \tkzDefPoint(6,0){X} \tkzDefPoint(3,3){Y} \tkzDefShiftPoint[X](-110:6){A} \tkzDefShiftPoint[X](-70:6){B} \tkzDefShiftPoint[Y](-110:4.2){A'} \tkzDefShiftPoint[Y](-70:4.2){B'} \tkzDefPointBy[translation= from A' to B ](Y) \tkzGetPoint{Y} \tkzDefPointBy[translation= from A' to B ](B') \tkzGetPoint{C} \tkzInterLL(A,B)(X,Y) \tkzGetPoint{O} \tkzDefMidPoint(X,Y) \tkzGetPoint{I} \tkzDefPointWith[orthogonal](I,Y) \tkzInterLL(I,tkzPointResult)(A,B) \tkzGetPoint{Z} \tkzDefCircle[circum](X,Y,B) \tkzGetPoint{O} \tkzDrawCircle(O,X) \tkzDrawLines[add = 0 and 1.5](A,C) \tkzDrawLines[add = 0 and 3](X,Y) \tkzDrawSegments(A,X B,X B,Y C,Y) \tkzDrawSegments[color=red](X,Z Y,Z) \tkzDrawPoints(A,B,C,X,Y,O,Z) \tkzLabelPoints(A,B,C,Z) \tkzLabelPoints[above right](X,Y,O) \end{tikzpicture}