--- /dev/null
+# Add Quadrangle
+
+from mechanic import *
+
+# add node
+n1 = mesh.AddNode(50, 10, 0)
+if n1 == 0: print("KO node addition.")
+
+n2 = mesh.AddNode(40, 20, 0)
+if n2 == 0: print("KO node addition.")
+
+# add quadrangle
+q1 = mesh.AddFace([n2, n1, 38, 39])
+if q1 == 0: print("KO quadrangle addition.")
+else: print("New Quadrangle has been added with ID ", q1)