Area of polygons worksheet

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

1 a.

triangle with vertices (3, 5), (3, 2), and (-1, 5).
 
 
 
 
1 b.

triangle with vertices (5, -8), (5, -10), and (-10, -8).
 
 
 
 
2 a.

triangle with vertices (6, 4), (6, 6), and (-5, 4).
 
 
 
 
2 b.

triangle with vertices (10, 10), (10, -6), and (4, 10).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 6 square units.

 
1 b. 

The area is 15 square units.

 
2 a. 

The area is 11 square units.

 
2 b. 

The area is 48 square units.

 


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