Area of polygons worksheet

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

1 a.

triangle with vertices (1, 8), (1, 0), and (7, 8).
 
 
 
 
1 b.

triangle with vertices (2, 5), (2, 6), and (3, 5).
 
 
 
 
2 a.

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

triangle with vertices (10, 8), (10, 9), and (7, 8).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 24 square units.

 
1 b. 

The area is 0.5 square units.

 
2 a. 

The area is 1 square units.

 
2 b. 

The area is 1.5 square units.

 


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