The construction of a BSP tree is simple to visualize. Image a scene consisting of three triangles. The key properties of the implicit planes these triangles define in 3D space is that for all point on one side of the plane + we can easily create a function …………. . Similarly for all points on the other side of the plane ,……….. 0. Using this property of implicit planes we can define on which side of the plane a triangle lies. Initially , let us assume that all of the triangles in our scene are either on one side of our partitioning plane defined by our triangle (Figure 5,Figure6). We can pick one of the triangles and partition the other triangles about it with pseudo code in Algorithm I.