Question 24
Max’s journey around this grid starts on a grid point on side $AB$.
He visits a grid point on each of sides $BC$, $CD$ and $DA$ in order before returning to his starting point, forming a quadrilateral.
Max does not visit corner points $A$, $B$, $C$ or $D$.
How many journeys are possible which are not rectangles? (Note that a square is a rectangle.)
He visits a grid point on each of sides $BC$, $CD$ and $DA$ in order before returning to his starting point, forming a quadrilateral.
Max does not visit corner points $A$, $B$, $C$ or $D$.
How many journeys are possible which are not rectangles? (Note that a square is a rectangle.)