Area of polygons worksheet

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

1 a.

quadrilateral with vertices (-8, 3), (9, 4), (1, -5), and (-10, -4).
 
 
 
 
1 b.

triangle with vertices (-7, -3), (7, 9), and (-4, -7).
 
 
 
 
2 a.

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

quadrilateral with vertices (-10, 8), (7, 0), (1, -7), and (-6, -8).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 112 square units.

 
1 b. 

The area is 46 square units.

 
2 a. 

The area is 20 square units.

 
2 b. 

The area is 141.5 square units.

 


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