Area of polygons worksheet

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

1 a.

triangle with vertices (-10, -7), (-10, -6), and (2, -7).
 
 
 
 
1 b.

triangle with vertices (-8, 10), (-8, 4), and (-1, 10).
 
 
 
 
2 a.

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

triangle with vertices (-2, 7), (-2, -8), and (6, 7).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 6 square units.

 
1 b. 

The area is 21 square units.

 
2 a. 

The area is 1.5 square units.

 
2 b. 

The area is 60 square units.

 


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