The tree is at (2, 4) and the range is 3 meters. The bush is at (7, 5) and the range is 2 meters. Finally, the pond is at (5,7) and the range is 3 meters – what is the robot’s position? Now imagine the robot only sees two landmarks, a pile of rocks and an umbrella. The rocks are at the position (10,0) and the umbrella is at the position (20,0). The distance to the rocks is 5 meters, and the distance to the umbrella is also 5 meters. Can you still determine the position of the robot, even though there are only two landmarks?