Area of polygons worksheet

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

1 a.

triangle with vertices (2, -10), (2, -9), and (5, -10).
 
 
 
 
1 b.

triangle with vertices (0, 0), (0, 4), and (5, 0).
 
 
 
 
2 a.

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

triangle with vertices (-2, 3), (-2, 2), and (9, 3).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 1.5 square units.

 
1 b. 

The area is 10 square units.

 
2 a. 

The area is 130 square units.

 
2 b. 

The area is 5.5 square units.

 


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