diff --git a/src/Geometry.php b/src/Geometry.php
index f8e94ba8..4583757c 100644
--- a/src/Geometry.php
+++ b/src/Geometry.php
@@ -230,7 +230,7 @@ public function isSimple()
     /**
      * Returns true if this geometric object has z coordinate values.
      *
-     * @todo add support for z coordinates
+     * @todo This should be abstract: each subclass should implement it.
      *
      * @return boolean
      */
@@ -242,7 +242,7 @@ public function is3D()
     /**
      * Returns true if this geometric object has m coordinate values.
      *
-     * @todo add support for m coordinates
+     * @todo This should be abstract: each subclass should implement it.
      *
      * @return boolean
      */
diff --git a/src/Point.php b/src/Point.php
index 98896854..6d5524e8 100644
--- a/src/Point.php
+++ b/src/Point.php
@@ -145,4 +145,20 @@ public function isEmpty()
     {
         return false;
     }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function is3D()
+    {
+        return $this->z !== null;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isMeasured()
+    {
+        return $this->m !== null;
+    }
 }
diff --git a/tests/PointTest.php b/tests/PointTest.php
index 4582d600..0f305179 100644
--- a/tests/PointTest.php
+++ b/tests/PointTest.php
@@ -52,6 +52,58 @@ public function testIsEmpty()
         $this->assertFalse(Point::factory(0, 0)->isEmpty());
     }
 
+    /**
+     * @dataProvider providerIs3D
+     *
+     * @param array   $coordinates The point coordinates.
+     * @param boolean $is3D        Whether the point is 3D.
+     */
+    public function testIs3D(array $coordinates, $is3D)
+    {
+        /** @var Point $point */
+        $point = call_user_func_array([Point::class, 'factory'], $coordinates);
+        $this->assertSame($is3D, $point->is3D());
+    }
+
+    /**
+     * @return array
+     */
+    public function providerIs3D()
+    {
+        return [
+            [[1.2, 3.4], false],
+            [[1.2, 3.4, 5.6], true],
+            [[1.2, 3.4, 5.6, 7.8], true],
+            [[1.2, 3.4, null, 7.8], false]
+        ];
+    }
+
+    /**
+     * @dataProvider providerIsMeasured
+     *
+     * @param array   $coordinates The point coordinates.
+     * @param boolean $isMeasured  Whether the point is measured.
+     */
+    public function testIsMeasured(array $coordinates, $isMeasured)
+    {
+        /** @var Point $point */
+        $point = call_user_func_array([Point::class, 'factory'], $coordinates);
+        $this->assertSame($isMeasured, $point->isMeasured());
+    }
+
+    /**
+     * @return array
+     */
+    public function providerIsMeasured()
+    {
+        return [
+            [[1.2, 3.4], false],
+            [[1.2, 3.4, 5.6], false],
+            [[1.2, 3.4, 5.6, 7.8], true],
+            [[1.2, 3.4, null, 7.8], true]
+        ];
+    }
+
     /**
      * @dataProvider providerEquals
      *