Area of polygons worksheet

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

1 a.

triangle with vertices (1, 5), (1, 8), and (0, 5).
 
 
 
 
1 b.

triangle with vertices (4, 5), (4, 8), and (9, 5).
 
 
 
 
2 a.

triangle with vertices (9, 0), (9, 7), and (2, 0).
 
 
 
 
2 b.

triangle with vertices (2, 3), (2, 9), and (4, 3).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 1.5 square units.

 
1 b. 

The area is 7.5 square units.

 
2 a. 

The area is 24.5 square units.

 
2 b. 

The area is 6 square units.

 


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