diff --git a/src/Spatial.Tests/Euclidean/Line2DTests.cs b/src/Spatial.Tests/Euclidean/Line2DTests.cs
index b4a5fc5..7dcc4ed 100644
--- a/src/Spatial.Tests/Euclidean/Line2DTests.cs
+++ b/src/Spatial.Tests/Euclidean/Line2DTests.cs
@@ -56,6 +56,31 @@ public void LineDirection(string p1s, string p2s, string exs)
             AssertGeometry.AreEqual(ex, line.Direction);
         }
 
+        [TestCase("-1,+1", "+1,+1", "0,0", 1.0)]
+        [TestCase("-1,+1", "+1,+1", "0,3", 2.0)]
+        [TestCase("-1,+1", "+1,+1", "0,1", 0.0)]
+        [TestCase("-1,0", "0,+1", "0,0", 0.70710678)]
+        [TestCase("-1,0", "0,+1", "-0.5,0.5", 0.0)]
+        [TestCase("+1,-1", "+1,+1", "0,0", 1.0)]
+        [TestCase("+1,-1", "+1,+1", "1,0", 0.0)]
+        [TestCase("+1,-1", "+1,+1", "3,0", 2.0)]
+        [TestCase("+1,+1", "-1,+1", "0,0", 1.0)]
+        [TestCase("+1,+1", "-1,+1", "0,3", 2.0)]
+        [TestCase("+1,+1", "-1,+1", "0,1", 0.0)]
+        [TestCase("0,+1", "-1,0", "0,0", 0.70710678)]
+        [TestCase("0,+1", "-1,0", "-0.5,0.5", 0.0)]
+        [TestCase("+1,+1", "+1,-1", "0,0", 1.0)]
+        [TestCase("+1,+1", "+1,-1", "1,0", 0.0)]
+        [TestCase("+1,+1", "+1,-1", "3,0", 2.0)]
+        public void DistanceFromLineToPoint(string p1s, string p2s, string ps, double expectedDistance)
+        {
+            var line = new Line2D(Point2D.Parse(p1s), Point2D.Parse(p2s));
+            var p = Point2D.Parse(ps);
+
+            var actual = line.DistanceTo(p);
+            Assert.That(actual, Is.EqualTo(expectedDistance).Within(1e-6));
+        }
+
         [TestCase("0,0", "10,10", "0,0", "10,10", true)]
         [TestCase("0,0", "10,10", "0,0", "10,11", false)]
         public void EqualityOperator(string p1s, string p2s, string p3s, string p4s, bool expected)
diff --git a/src/Spatial/Euclidean/Line2D.cs b/src/Spatial/Euclidean/Line2D.cs
index d1c516a..81a50e4 100644
--- a/src/Spatial/Euclidean/Line2D.cs
+++ b/src/Spatial/Euclidean/Line2D.cs
@@ -123,6 +123,19 @@ public static Line2D Parse(string startPointString, string endPointString)
             return new Line2D(Point2D.Parse(startPointString), Point2D.Parse(endPointString));
         }
 
+        /// <summary>
+        /// Returns the straight line Distance to the given point.
+        /// </summary>
+        /// <param name="p">the given point</param>
+        /// <returns>a distance measure</returns>
+        [Pure]
+        public double DistanceTo(Point2D p)
+        {
+            var closestPoint = ClosestPointTo(p, false); // this is Line2D, not LineSegment2D.
+            var result = closestPoint.DistanceTo(p);
+            return result;
+        }
+
         /// <summary>
         /// Returns the shortest line between this line and a point.
         /// </summary>