Area of polygons worksheet

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

1 a.

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

triangle with vertices (1, 2), (1, 10), and (3, 2).
 
 
 
 
2 a.

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

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

Answer Key

1 a. 

The area is 4 square units.

 
1 b. 

The area is 8 square units.

 
2 a. 

The area is 2 square units.

 
2 b. 

The area is 9 square units.

 


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