3. Part of a jungle is in the shape of a 20km by 20km square. There are 4 groups of gorillas in the jungle and they each have their own hunting

territory. Group A is positioned at (4, 4), Group B at (4, 16), Group C at (14, 6) and Group D at (18,16). Construct a Voronoi Diagram of the Gorillas' territories, clearly stating the midpoints and gradients of each boundary line. [19] A termite filled tree is located at point (8,9). Which group's territory is this tree in? [2]