You can find many relevant geometry entities with the script below. Each has their own properties like Face.Area or Body.Volume
Verts=[]
for Assembly in ExtAPI.DataModel.GeoData.Assemblies:
for Part in Assembly.Parts:
for Body in Part.Bodies:
for Face in Body.Faces:
for Edge in Face.Edges:
for Vertex in Edge.Vertices:
Verts.append(Vertex)
print len(Verts)