Consider a robot with two simple manipulators, as
shown in figure figRobot2. Manipulator A is a square block of side 2
which can slide back and on a rod that runs along the x-axis from
x=$-$10 to x=10. Manipulator B is a square block of side 2 which can
slide back and on a rod that runs along the y-axis from y=-10 to y=10.
The rods lie outside the plane of manipulation, so the rods do not
interfere with the movement of the blocks. A configuration is then a
pair