diff --git a/Makefile b/Makefile
index c51b7d6..f66945d 100644
--- a/Makefile
+++ b/Makefile
@@ -96,7 +96,9 @@ clean:
 #________________________________|
 target_objs0 = \
 	main.o \
-	Figure.o
+	Figure.o \
+	Polygon.o \
+	Rhomb.o
 
 $(TARGET0): $(target_objs0)
 	$(CC) $(LDFLAGS) -o $@ $(target_objs0)
@@ -109,6 +111,19 @@ main.o: \
 	Polygon.h \
 	Rhomb.h
 
+Rhomb.o: \
+	Rhomb.c \
+	Figure.h \
+	Object.h \
+	Polygon.h \
+	Rhomb.h
+
+Polygon.o: \
+	Polygon.c \
+	Figure.h \
+	Object.h \
+	Polygon.h
+
 Figure.o: \
 	Figure.c \
 	Figure.h \
diff --git a/Polygon.c b/Polygon.c
new file mode 100644
index 0000000..ca00ac1
--- /dev/null
+++ b/Polygon.c
@@ -0,0 +1,54 @@
+#include "Polygon.h"
+
+/* private */
+static const char* __Polygon_type ()
+{
+  return "Polygon";
+}
+
+static Polygon* __Polygon_clone (const Polygon *this)
+{
+
+}
+
+static void __Polygon_destroy (Polygon *this)
+{
+
+}
+
+static void __Polygon_draw (const Polygon *this)
+{
+
+}
+
+static double __Polygon_area (const Polygon *this)
+{
+
+}
+
+static double __Polygon_max_diag (const Polygon *this)
+{
+
+}
+
+/* public */
+Polygon* Polygon_new (const struct point *points)
+{
+
+}
+
+/* considered to be protected */
+void Polygon_constructor (Polygon *this, const struct point *points)
+{
+
+}
+
+void Polygon_destructor (Polygon *this)
+{
+
+}
+
+void Polygon_copy (Polygon *dest, const Polygon *src)
+{
+
+}
diff --git a/Polygon.h b/Polygon.h
index 0100c3a..1176904 100644
--- a/Polygon.h
+++ b/Polygon.h
@@ -63,7 +63,7 @@ static inline double Polygon_max_diag (const Polygon *this)
 }
 
 /* considered to be protected */
-void Polygon_constructor (Polygon *this);
+void Polygon_constructor (Polygon *this, const struct point *points);
 void Polygon_destructor (Polygon *this);
 void Polygon_copy (Polygon *dest, const Polygon *src);
 
diff --git a/Rhomb.c b/Rhomb.c
new file mode 100644
index 0000000..3a21248
--- /dev/null
+++ b/Rhomb.c
@@ -0,0 +1,59 @@
+#include "Rhomb.h"
+
+/* private */
+static const char* __Rhomb_type ()
+{
+  return "Rhomb";
+}
+
+static Rhomb* __Rhomb_clone (const Rhomb *this)
+{
+
+}
+
+static void __Rhomb_destroy (Rhomb *this)
+{
+
+}
+
+static void __Rhomb_draw (const Rhomb *this)
+{
+
+}
+
+static double __Rhomb_area (const Rhomb *this)
+{
+
+}
+
+static double __Rhomb_max_diag (const Rhomb *this)
+{
+
+}
+
+static int __Rhomb_is_square (const Rhomb *this)
+{
+
+}
+
+/* public */
+Rhomb* Rhomb_new (const struct point *points)
+{
+
+}
+
+/* considered to be protected */
+void Rhomb_constructor (Rhomb *this, const struct point *points)
+{
+
+}
+
+void Rhomb_destructor (Rhomb *this)
+{
+
+}
+
+void Rhomb_copy (Rhomb *dest, const Rhomb *src)
+{
+
+}
diff --git a/Rhomb.h b/Rhomb.h
index 31890ca..5ba5c0b 100644
--- a/Rhomb.h
+++ b/Rhomb.h
@@ -67,7 +67,7 @@ static inline int Rhomb_is_square (const Rhomb *this)
 }
 
 /* considered to be protected */
-void Rhomb_constructor (Rhomb *this);
+void Rhomb_constructor (Rhomb *this, const struct point *points);
 void Rhomb_destructor (Rhomb *this);
 void Rhomb_copy (Rhomb *dest, const Rhomb *src);
 
diff --git a/main.c b/main.c
index 8f05298..370413c 100644
--- a/main.c
+++ b/main.c
@@ -4,6 +4,7 @@
 
 int main (void)
 {
+  Polygon_destroy (NULL);
 /*  unsigned long i = 0;
   Figure *fig[3];