\begin{center}\begin{large}Navigation\end{large}\end{center}

The shortest distance between two points is a straight line. It is, however, not usually possible to navigate along a straight line in a town. Look at the map below. The grey lines are the roads and the square blue blocks are the buildings.

In this exercise you will explore different strategies for planning a route from one point to another in this town.

\begin{center}\includegraphics[width=8cm]{PISA/2022/PISA_2022_Mathematics_items_Exo6_IMG1.jpg}\end{center}

Ann, Bob and Corey have different ideas about how to determine the shortest route from A to B.

\begin{itemize}
    \item Ann always moves right or up and stays below but as close as possible to the straight red line joining A and B (green line).
    \item Bob always moves right or up and tries to cross the straight red line joining A and B as often as possible (orange line).
    \item Corey always moves right or up and stays above but as close as possible to the straight red line joining A and B (purple line).
\end{itemize}

\includegraphics[width=5.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo6_IMG2.jpg}
\includegraphics[width=5.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo6_IMG3.jpg}
\includegraphics[width=5.5cm]{PISA/2022/PISA_2022_Mathematics_items_Exo6_IMG4.jpg}

