Area of polygons worksheet

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

1 a.

quadrilateral with vertices (2, 7), (7, 9), (9, 1), and (1, 0).
 
 
 
 
1 b.

triangle with vertices (9, 2), (7, 7), and (3, 8).
 
 
 
 
2 a.

quadrilateral with vertices (3, 7), (9, 8), (5, 5), and (3, 2).
 
 
 
 
2 b.

triangle with vertices (9, 10), (6, 2), and (3, 0).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 49.5 square units.

 
1 b. 

The area is 9 square units.

 
2 a. 

The area is 12 square units.

 
2 b. 

The area is 9 square units.

 


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