Area of polygons worksheet

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

1 a.

quadrilateral with vertices (-4, 3), (7, 3), (9, -7), and (-1, -4).
 
 
 
 
1 b.

triangle with vertices (-5, -7), (8, 3), and (-2, 3).
 
 
 
 
2 a.

triangle with vertices (-3, 3), (10, 6), and (8, -9).
 
 
 
 
2 b.

quadrilateral with vertices (-5, 6), (4, 2), (5, -3), and (-3, -1).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 85.5 square units.

 
1 b. 

The area is 50 square units.

 
2 a. 

The area is 94.5 square units.

 
2 b. 

The area is 46.5 square units.

 


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