Fig. 3
From: CRAFT: a web-integrated cavity prediction tool based on flow transfer algorithm
A diagrammatical illustration of the face of a tetrahedron having three atoms of different radii at its vertices in the XY plane. The maximum radius of the sphere that can pass through them is equivalent to MCR that can pass through △ABC. The a, b, and c are the Euclidean distance between the centers of the spheres A, B, and C, respectively