diff --git a/src/matrixmania/compute.py b/src/matrixmania/compute.py
index 2a11f7a..a9b233c 100644
--- a/src/matrixmania/compute.py
+++ b/src/matrixmania/compute.py
@@ -23,8 +23,6 @@ __all__ = ["matmul", "transpose"]
 
 def matmul(a: list[list[float]] , b:list[list[float]]) -> list[list[float]]:
     """Return the product of two matrices ``a`` and ``b``.
-
-
     Returns
     -------
     List[List[float]]
@@ -169,6 +167,13 @@ def transpose(a: list[list[float]]) -> list[list[float]]:
         [row[i] for row in a]
         for i in range(len(a[0]))
     ]
+
+def project_ortho(point: tuple[float, float], scale: float= 1) -> tuple[float, float]:
+    #das dreidimensionale wird zweidimensional gezeichnet z muss hinten immer weg
+    x, y, z = point
+    return (x * scale, y * scale)
+
+
 def main() -> None:
     """Demonstrate :func:`matmul` with a simple example.
     This function is only executed when the module is run as a script.
diff --git a/test/test_matrixmania/test_projection.py b/test/test_matrixmania/test_projection.py
new file mode 100644
index 0000000..72ece99
--- /dev/null
+++ b/test/test_matrixmania/test_projection.py
@@ -0,0 +1,23 @@
+from matrixmania.compute import project_ortho
+
+def test_project_ortho_ohneSkalierung():
+    # Arrange
+    point =(1, 2, 3)
+    expected = (1, 2)
+
+    #Act
+    result = project_ortho(point)
+
+    #Assert
+    assert result == expected
+def test_project_ortho_mitskalierung():
+    #Arrange
+    point = (1, 2, 3)
+    scale = 100
+    expected =(100, 200)
+
+    #Act
+    result = project_ortho(point, scale)
+
+    #Assert
+    assert result == expected
\ No newline at end of file