diff --git a/src/build123d/topology.py b/src/build123d/topology.py
index 0941eab..7da7b28 100644
--- a/src/build123d/topology.py
+++ b/src/build123d/topology.py
@@ -3962,12 +3962,16 @@ class Face(Shape):
 
     @overload
     @classmethod
-    def make_ruled_surface(cls, edge1: Edge, edge2: Edge) -> Face:  # pragma: no cover
+    def make_surface_from_curves(
+        cls, edge1: Edge, edge2: Edge
+    ) -> Face:  # pragma: no cover
         ...
 
     @overload
     @classmethod
-    def make_ruled_surface(cls, wire1: Wire, wire2: Wire) -> Face:  # pragma: no cover
+    def make_surface_from_curves(
+        cls, wire1: Wire, wire2: Wire
+    ) -> Face:  # pragma: no cover
         ...
 
     @classmethod
@@ -4316,6 +4320,15 @@ class Face(Shape):
 
         return plane
 
+    def is_coplanar(self, plane: Plane) -> bool:
+        """Is this planar face coplanar with the provided plane"""
+        return self.geom_type() == "PLANE" and all(
+            [
+                plane.contains(pnt)
+                for pnt in self.outer_wire().positions([i / 7 for i in range(8)])
+            ]
+        )
+
     def thicken(self, depth: float, normal_override: VectorLike = None) -> Solid:
         """Thicken Face
 
diff --git a/tests/test_direct_api.py b/tests/test_direct_api.py
index 947edeb..c2fd8b3 100644
--- a/tests/test_direct_api.py
+++ b/tests/test_direct_api.py
@@ -971,6 +971,13 @@ class TestFace(unittest.TestCase):
         self.assertAlmostEqual(imported_torus.area, torus.area, 0)
         os.remove("test_torus.stl")
 
+    def test_is_coplanar(self):
+        square = Face.make_rect(1, 1, plane=Plane.XZ)
+        self.assertTrue(square.is_coplanar(Plane.XZ))
+        self.assertFalse(square.is_coplanar(Plane.XY))
+        surface: Face = Solid.make_sphere(1).faces()[0]
+        self.assertFalse(surface.is_coplanar(Plane.XY))
+
 
 class TestFunctions(unittest.TestCase):
     def test_edges_to_wires(self):