Area of polygons worksheet

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

1 a.

triangle with vertices (0, 4), (9, 6), and (9, 1).
 
 
 
 
1 b.

quadrilateral with vertices (0, 10), (8, 10), (5, 4), and (1, 2).
 
 
 
 
2 a.

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

quadrilateral with vertices (4, 6), (9, 8), (5, 3), and (2, 4).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 22.5 square units.

 
1 b. 

The area is 41 square units.

 
2 a. 

The area is 1 square units.

 
2 b. 

The area is 12.5 square units.

 


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