Area of polygons worksheet

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

1 a.

triangle with vertices (28, 90), (28, -3), and (-72, 90).
 
 
 
 
1 b.

parallelogram with vertices (-38, 7), (57, 7), (5, -63), and (-90, -63).
 
 
 
 
2 a.

triangle with vertices (66, 50), (66, -12), and (2, 50).
 
 
 
 
2 b.

triangle with vertices (-33, -75), (-33, 0), and (43, -75).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 4650 square units.

 
1 b. 

The area is 6650 square units.

 
2 a. 

The area is 1984 square units.

 
2 b. 

The area is 2850 square units.

 


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