4. Given a mesh with the following vertex coordinates list and face list, compute the unit normal for Face 2? The usual CCW order is assumed. (10pts) Vertex IID 0 0.4 0.3 0.2 0.5 0.3 0 0.4 0.3 0.6 0.7 0.5 0.4 0.2 0.2 Face ID VO V1 V2 4. Given a mesh with the following vertex coordinates list and face list, compute the unit normal for Face 2? The usual CCW order is assumed. (10pts) Vertex IID 0 0.4 0.3 0.2 0.5 0.3 0 0.4 0.3 0.6 0.7 0.5 0.4 0.2 0.2 Face ID VO V1 V2