Area of polygons worksheet

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

1 a.

triangle with vertices (-6, -4), (0, 1), and (-1, -10).
 
 
 
 
1 b.

triangle with vertices (-8, 2), (-3, -4), and (-8, 6).
 
 
 
 
2 a.

quadrilateral with vertices (-10, 6), (2, 10), (5, -6), and (-3, -6).
 
 
 
 
2 b.

triangle with vertices (-7, -4), (-8, 0), and (-3, -5).
 
 
 
 
Page 2

Answer Key

1 a. 

The area is 30.5 square units.

 
1 b. 

The area is 10 square units.

 
2 a. 

The area is 150 square units.

 
2 b. 

The area is 7.5 square units.

 


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