diff --git a/src/Geometry.cc b/src/Geometry.cc
index 5eaab26..56ffa65 100644
--- a/src/Geometry.cc
+++ b/src/Geometry.cc
@@ -13,4 +13,16 @@ bool Sphere::intersect(const Ray &r) const {
   return b * b - 4 * a * c >= 0;
 }
 
-bool Rectangle::intersect(const Ray &r) const { return false; }
+bool Rectangle::intersect(const Ray &r) const {
+  Vector3f p1p2 = corners.col(1) - corners.col(0);
+  Vector3f p2p3 = corners.col(2) - corners.col(1);
+  Vector3f p3p1 = corners.col(0) - corners.col(2);
+  Vector3f p1p4 = corners.col(3) - corners.col(0);
+  Vector3f p4p3 = corners.col(2) - corners.col(3);
+
+  Vector3f n = -p1p2.cross(p2p3) / p1p2.cross(p2p3).norm();
+
+  if (n.dot(r.getOrigin() + r.getDirection()) == 0) {
+  }
+  return false;
+}