این اشکال به سادگی با tikz رسم میشوند.
\documentclass{beamer}
\usepackage{tkz-euclide}
\usetkzobj{all}
\begin{document}
\begin{frame}{Monotonicity Lemma}
\begin{tikzpicture}[scale=.5]
\tkzDefPoint(0,0){o}
\tkzDefPoint[label=below:$h_{-}(t)$](0,7){lab}
\tkzDefPoint[label=right:$y$](4,0){y}
\tkzDefPoint[label=left:$y$](-4,0){-y}
\tkzDefPoint[label=right:$x$](45:4){x}
\tkzDrawCircle(o,y)
\tkzDrawVectors(o,y o,-y o,x)
\tkzDrawPoints(o,x,y,-y)
\only<2->{
\tkzDefPoint[label=left:{\scriptsize \color{red} $t=-1$}](110:4){t=-1}
\tkzDrawSegment[red](-y,t=-1)
}
\only<3->{
\tkzDefPoint[label=above:{\scriptsize \color{red} $t=-1/2$}](90:4){t=-12}
\tkzDrawSegment[red](-y,t=-12)
}
\only<4->{
\tkzDefPoint[label=above:{\scriptsize \color{red} $t=0$}](45:4){t=0}
\tkzDrawSegment[red](-y,t=0)
}
\end{tikzpicture}
\begin{tikzpicture}[scale=.5]
\tkzDefPoint(0,0){o}
\tkzDefPoint[label=below:$h_{+}(t)$](0,7){lab}
\tkzDefPoint[label=right:$y$](4,0){y}
\tkzDefPoint[label=left:$y$](-4,0){-y}
\tkzDefPoint[label=right:$x$](45:4){x}
\tkzDrawCircle(o,y)
\tkzDrawVectors(o,y o,-y o,x)
\tkzDrawPoints(o,x,y,-y)
\only<5->{
\tkzDefPoint[label=left:{\scriptsize \color{blue} $t=-2$}](135:4){t=-2}
\tkzDrawSegment[blue](y,t=-2)
}
\only<6->{
\tkzDefPoint[label=left:{\scriptsize \color{blue} $t=-1$}](100:4){t=-1}
\tkzDrawSegment[blue](y,t=-1)
}
\only<7->{
\tkzDefPoint[label=above:{\scriptsize \color{blue} $t=-1/2$}](80:4){t=-12}
\tkzDrawSegment[blue](y,t=-12)
}
\end{tikzpicture}
\end{frame}
\end{document}