Area of polygons worksheet

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

1 a.

triangle with vertices (9, 7), (0, 9), and (6, 0).
 
 
 
 
1 b.

quadrilateral with vertices (0, 6), (10, 5), (9, 4), and (4, 2).
 
 
 
 
2 a.

triangle with vertices (7, 3), (9, 2), and (4, 1).
 
 
 
 
2 b.

quadrilateral with vertices (4, 8), (8, 7), (5, 5), and (4, 0).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 34.5 square units.

 
1 b. 

The area is 19.5 square units.

 
2 a. 

The area is 3.5 square units.

 
2 b. 

The area is 9.5 square units.

 


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