\input{Figs/Klein.Base.tikz};


%Convex parameter on PQ
\pgfmathparse{0.7}\let\t\pgfmathresult;

%X=X(t)
\coordinate (X) at ($(P)!\t!(Q)$);

\fill (X) circle(1pt) node [above] {$X$};

%Midpoint
\pgfmathparse{0.5}\let\t\pgfmathresult;

%X=X(t)
\coordinate (M) at ($(P)!\t!(Q)$);

\fill (M) circle(1pt) node [above] {$M$};
