Area of polygons worksheet

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

1 a.

triangle with vertices (3, -2), (3, 4), and (7, -2).
 
 
 
 
1 b.

triangle with vertices (5, -6), (5, -3), and (8, -6).
 
 
 
 
2 a.

triangle with vertices (6, 8), (6, 4), and (8, 8).
 
 
 
 
2 b.

triangle with vertices (3, -3), (3, 0), and (1, -3).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 12 square units.

 
1 b. 

The area is 4.5 square units.

 
2 a. 

The area is 4 square units.

 
2 b. 

The area is 3 square units.

 


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