1 a. 
The points are (5, 4), (4, 9), (1, 0), and (8, 4) 

1 b. 
It is a quadrilateral. 

2 a. 
The points are (1, 5), (7, 9), (1, 7), and (5, 2) 

2 b. 
The points are (1, 6), (3, 10), (4, 5), and (6, 9) 

3 a. 
It is a parallelogram. 

3 b. 
The points are (2, 7), (6, 1), (4, 7), and (9, 8) 

4 a. 


4 b. 
The points are (0, 3), (6, 0), (9, 10), and (1, 5) 

5 a. 
The points are (5, 7), (7, 1), (7, 7), and (8, 8) 

5 b. 
The points are (8, 8), (9, 9), (3, 8), and (10, 2) 
