Area of polygons worksheet

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

1 a.

triangle with vertices (1, 5), (1, 7), and (5, 5).
 
 
 
 
1 b.

triangle with vertices (10, 1), (10, 7), and (5, 1).
 
 
 
 
2 a.

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

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

Answer Key

1 a. 

The area is 4 square units.

 
1 b. 

The area is 15 square units.

 
2 a. 

The area is 1 square units.

 
2 b. 

The area is 3.5 square units.

 


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