Area of polygons worksheet

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

1 a.

triangle with vertices (10, 3), (10, 4), and (5, 3).
 
 
 
 
1 b.

triangle with vertices (3, 8), (3, 0), and (7, 8).
 
 
 
 
2 a.

triangle with vertices (3, 0), (3, 2), and (4, 0).
 
 
 
 
2 b.

triangle with vertices (7, 8), (7, 1), and (4, 8).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 2.5 square units.

 
1 b. 

The area is 16 square units.

 
2 a. 

The area is 1 square units.

 
2 b. 

The area is 10.5 square units.

 


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