Area of polygons worksheet

Find the area of the shapes when their vertices are given.

1 a.

quadrilateral with vertices (-5, 7), (2, 1), (8, -1), and (-9, -4).
 
 
 
 
1 b.

triangle with vertices (9, 4), (-9, -3), and (-1, 5).
 
 
 
 
2 a.

quadrilateral with vertices (0, 1), (8, 0), (1, -8), and (-8, -9).
 
 
 
 
2 b.

quadrilateral with vertices (-5, 2), (4, 5), (3, -2), and (-7, -1).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 76.5 square units.

 
1 b. 

The area is 44 square units.

 
2 a. 

The area is 76.5 square units.

 
2 b. 

The area is 46 square units.

 


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