Наследование абстрактного класса, компилятор достал материться

#pragma once
 
class Shape
{
public:
    /*virtual double Dist(const Shape&) = 0; //1. */
    virtual void Read() = 0;
    virtual void Move(int delta_x, int delta_y) = 0;
    virtual Shape& Draw() = 0;
    virtual ~Shape() {};
private:
    virtual bool Set(int,int) = 0;
};//Shape

#pragma once
#include "Shape.h"
 
class Point : public Shape
{
public:
    /*double Dist(const Point&); //2. */
    void Read();
    void Move(int delta_x, int delta_y);
    Point& Draw();
    ~Point();
    Point(int = 0, int = 0);
    Point(const Point&);
    Point& operator= (const Point&);
private:
    bool Set(int x_, int y_);
    int x, y;
};//Point

#include <iostream>
#include "math.h"
#include "Point.h"
 
using namespace std;
 
/*double Point::Dist(const Point& pt)
{
return 0;
}//Dist 3. */
 
void    Point::Read()
{
}//Read
 
void    Point::Move(int delta_x, int delta_y)
{
}//Move
 
bool    Point::Set(int x_, int y_)
{ 
}
 
Point&  Point::Draw()
{
return *this;
}//Draw
 
//Special methods
Point::~Point()
{
}//~Point
 
Point::Point(int x_, int y_)
{
}//Point
 
Point::Point(const Point& pt)
{
}//Point copy
 
//Redefined operators
Point& Point::operator= (const Point& rs)
{
return *this;
}//operator=

error C2259: 'Point' : cannot instantiate abstract class
1>          due to following members:
1>          'double Shape::Dist(const Shape &)' : is abstract