Area of polygons worksheet

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

1 a.

triangle with vertices (3, 4), (3, 10), and (1, 4).
 
 
 
 
1 b.

triangle with vertices (1, 0), (1, 5), and (2, 0).
 
 
 
 
2 a.

triangle with vertices (7, 8), (7, 5), and (8, 8).
 
 
 
 
2 b.

triangle with vertices (10, 7), (10, 10), and (4, 7).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 6 square units.

 
1 b. 

The area is 2.5 square units.

 
2 a. 

The area is 1.5 square units.

 
2 b. 

The area is 9 square units.

 


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