Intersection-Matrix-Calculation.md

@@ -87,6 +87,17 @@ E ∩ B = .false
 E ∩ E = 2  
 If the order of the two geometries is reversed, the intersection matrix would be the transpose of the above.
 
+The IM for a MultiPolygon and a geometry of dimension .zero, in that order, are  
+I ∩ I = 0, if a point intersects the interior of the MultiPolygon, else .false  
+I ∩ B = .false  
+I ∩ E = 2  
+B ∩ I = 0, if a point intersects the MultiPolygon boundary, else .false  
+B ∩ B = .false  
+B ∩ E = 1  
+E ∩ I = 0, if at least one point lies outside the MultiPolygon, else .false  
+E ∩ B = .false  
+E ∩ E = 2  
+If the order of the two geometries is reversed, the intersection matrix would be the transpose of the above.
 
 **The dimension of the intersection of two geometries, both of which are dimension .one, is either .zero, .one, or .false**