Area of polygons worksheet

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

1 a.

quadrilateral with vertices (2, 9), (6, 7), (8, 0), and (3, 0).
 
 
 
 
1 b.

triangle with vertices (5, 7), (0, 10), and (1, 8).
 
 
 
 
2 a.

triangle with vertices (9, 9), (0, 6), and (5, 4).
 
 
 
 
2 b.

triangle with vertices (2, 0), (1, 4), and (6, 8).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 34.5 square units.

 
1 b. 

The area is 3.5 square units.

 
2 a. 

The area is 16.5 square units.

 
2 b. 

The area is 12 square units.

 


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