diff --git a/etk/math/Vector2D.h b/etk/math/Vector2D.h
index 7949537..753f2a5 100644
--- a/etk/math/Vector2D.h
+++ b/etk/math/Vector2D.h
@@ -216,6 +216,14 @@ namespace etk {
 				--(*this);
 				return result;
 			}
+			/**
+			 * @brief Return the cross product
+			 * @param v The other vector in the cross product
+			 */
+			btScalar cross(const Vector2D<T>& _v) const {
+				return   m_floats[0] * _v.m_floats[1]
+				       - m_floats[1] * _v.m_floats[0];
+			}
 			/**
 			 * @brief Return the dot product
 			 * @param v The other vector in the dot product