Area of polygons worksheet

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

1 a.

triangle with vertices (2, 8), (-8, 10), and (1, -7).
 
 
 
 
1 b.

quadrilateral with vertices (-10, 2), (10, 8), (2, -3), and (-8, -9).
 
 
 
 
2 a.

triangle with vertices (-8, 1), (-2, 7), and (5, 4).
 
 
 
 
2 b.

quadrilateral with vertices (-8, 7), (3, 7), (2, -2), and (-10, -3).
 
 
 
 

Answer Key

1 a. 

The area is 76 square units.

 
1 b. 

The area is 147 square units.

 
2 a. 

The area is 30 square units.

 
2 b. 

The area is 108.5 square units.

 


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