Area of polygons worksheet

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

1 a.

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

triangle with vertices (3, 6), (3, 1), and (9, 6).
 
 
 
 
2 a.

triangle with vertices (1, 10), (1, 9), and (9, 10).
 
 
 
 
2 b.

triangle with vertices (0, 8), (0, 9), and (3, 8).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 6 square units.

 
1 b. 

The area is 15 square units.

 
2 a. 

The area is 4 square units.

 
2 b. 

The area is 1.5 square units.

 


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